Не видел в ботах такой функции. Но я такую видел в курсоре для БД вы наверное путаете вы наверное должны

import discord
import asyncio
import aiosqlite
import random
from discord.ext import commands
from discord_components import Button,Select,SelectOption,ComponentsBot

import config

#set prefix
client = commands.Bot(command_prefix = "$")
client.remove_command('help')

#ready check
@client.event
async def on_ready():
  print('Bot logged in as {0.user}'.format(client))
  setattr(client, 'db', await aiosqlite.connect('level.db'))
  await asyncio.sleep(3)
  async with client.db.cursor() as cursor:
    await cursor.execute('CREATE TABLE IF NOT EXISTS levels (level INTEGER, xp INTEGER, user INTEGER, guild INTEGER)')


@client.event
async def on_message(message):
  if message.author.bot:
    return
  await client.process_commands(message)
  author = message.author
  guild = message.guild
  async with client.db.cursor() as cursor:
    await cursor.execute("SELECT xp FROM  levels WHERE user = ? AND guild = ?", (author.id, guild.id,))
    xp = await cursor.fetchone()
    await cursor.execute("SELECT xp FROM  levels WHERE user = ? AND guild = ?", (author.id, guild.id,))
    level = await cursor.fetchone()

    if not xp or not level:
      await cursor.execute("INSERT INTO levels (level, xp, user, guild) VALUES (?, ?, ?, ?)", (0, 0, author.id, guild.id,))
      await client.db.commit()

    try:
      xp =xp[0]
      level = level[0]
    except TypeError:
      xp = 0
      level = 0

    if level <5:
      xp += random.randint(1, 3)
      await cursor.execute("UPDATE levels SET xp = ? WHERE user = ? AND guild = ?", (xp, author.id, guild.id,))
    else:
      rand = random.randint(1, (level//4))
      if rand == 1:
        xp += random.randint(1, 3)
        await cursor.execute("UPDATE levels SET xp = ? WHERE user = ? AND guild = ?", (xp, author.id, guild.id,))
    if xp >= 100:
      level += 1
      await cursor.execute("UPDATE levels SET level = ? WHERE user = ? and guild = ?", (level, author.id, guild.id,))
      await cursor.execute("UPDATE levels SET xp = ? WHERE user = ? AND guild = ?", (0, author.id, guild.id,))
      await message.channel.send(f'{author.mention} has leveled up to level **{level}**!')
  await client.db.commit()

@client.command(aliases = ['lvl', 'rank', 'r'])
async def level(ctx, member: discord.Member = None):
  member = ctx.author
  async with client.db.cursor() as cursor:
    await cursor.execute("SELECT xp FROM  levels WHERE user = ? AND guild = ?", (member.id, ctx.guild.id,))
    xp = await cursor.fetchone()
    await cursor.execute("SELECT xp FROM  levels WHERE user = ? AND guild = ?", (member.id, ctx.guild.id,))
    level = await cursor.fetchone()

    if not xp or not level:
      await cursor.execute("INSERT INTO levels (level, xp, user, guild) VALUES (?, ?, ?, ?)", (0, 0, ctx.author.id, ctx.guild.id,))
      await client.db.commit()

    try:
      xp = xp[0]
      level = level[0]
    except TypeError:
      xp = 0
      level = 0

    em = discord.Embed(title = f"{member.name}'s level", description = f"level: {level}\nXP: {xp}")
    em.set_thumbnail(url = member.avatar_url)
    await ctx.send(embed = em)
#help command
@client.command()
async def help(ctx):
  page1 = discord.Embed(title = 'Start Page.', 
    description = 
    'Bot prefix = `' + str(config.PREFIX) + '`\n'+ 
    'This is a start page, please select a category for more information!',
    color = discord.Color.green())
  page1.set_thumbnail(url = ctx.guild.icon_url)

  page2 = discord.Embed(title = 'Moderation Settings.', 
    description = 
    '**clear** `amount` - clears the chat to amount.\n' +
    '**mute** `user,time,reason` - disables access to all channels.\n' +
    '**unmute** `user` - enables access to all channels.\n' +
    '**kick** `user,reason` - kick a member from the server.\n' +
    '**ban** `user,reason` - ban a member from the server.\n' +
    '**unban** `user` - unban a member from the server.', 
    color = discord.Color.green())
  page2.set_thumbnail(url = ctx.guild.icon_url)

  emoji1 = client.get_emoji(973967340003815444)
  message = await ctx.send(components = [
    Select(
      placeholder = 'Select a category!',
      options = [
        SelectOption(
        	label = 'Moderation Settings',
        	emoji = emoji1,
        	description = 'Setting up server moderation.',
        	value = '1'
        )
      ],
      custom_id = 'HelpSelect'
    )
  ], embed = page1)

  while True:
    interaction = await client.wait_for('select_option', check = lambda inter: inter.custom_id == 'HelpSelect' and inter.user == ctx.author)
    value = interaction.values[0]
    if value == '1':
      await message.edit(embed = page2)
    else:
      print('Error')

#clear command
@client.command()
@commands.has_permissions(administrator = True)
async def clear(ctx, amount = 0):
  await ctx.channel.purge(limit  = amount + 1)

#kick command
@client.command()
@commands.has_permissions(kick_members = True)
async def kick(ctx, member:discord.Member, *, reason = None):
    if reason == None:
      reason = "None"
    await ctx.guild.kick(member)
    await ctx.send(f'{member.mention} has been kicked for {reason}.')

#mute command
@client.command()
@commands.has_permissions(manage_messages = True)
async def mute(ctx, member:discord.Member, time:str, *, reason = None):
  end_time = time[-1:]
  mutetime = int(time[:-1])

  muteembedserver = discord.Embed(title = 'Mute information.', color = discord.Color.red())
  muteembedserver.add_field(name = 'Moderator', value = ctx.author.mention, inline = True)
  muteembedserver.add_field(name = 'Muted user', value = member.mention, inline = True)
  muteembedserver.add_field(name = '⠀', value = '⠀', inline = True)
  muteembedserver.add_field(name = 'Reason', value = reason, inline = True)
  muteembedserver.add_field(name = 'Muted Time', value = time, inline = True)
  muteembedserver.add_field(name = '⠀', value = '⠀', inline = True)

  muteembedmember = discord.Embed(title = 'Mute information.', description = 'You were muted in the server ' + str(ctx.guild.name) + str('!'), color = discord.Color.red())
  muteembedmember.add_field(name = 'Moderator', value = ctx.author.mention, inline = True)
  muteembedmember.add_field(name = 'Reason', value = reason, inline = True)
  muteembedmember.add_field(name = 'Time', value = time, inline = True)

  guild = ctx.guild
  mutedRole = discord.utils.get(guild.roles, name = 'Muted')

  if not mutedRole:
    mutedRole = await guild.create_role(name = 'Muted')
    for channel in guild.channels:
      await channel.set_permissions(mutedRole, speak = False, send_messages = False, read_message_history = True, read_messages = False)
  if mutetime <= 0:
    await ctx.send(f'Time must not be less than or equal to zero!')
  else:
    if end_time == 's':
      await member.add_roles(mutedRole, reason = reason)
      await ctx.send(embed = muteembedserver)
      await member.send(embed = muteembedmember)
      await asyncio.sleep(mutetime)
      await member.remove_roles(mutedRole)
    elif end_time == 'm':
      await member.add_roles(mutedRole, reason = reason)
      await ctx.send(embed = muteembedserver)
      await member.send(embed = muteembedmember)
      await asyncio.sleep(mutetime * 60)
      await member.remove_roles(mutedRole)
    elif end_time == 'h':
      await member.add_roles(mutedRole, reason = reason)
      await ctx.send(embed = muteembedserver)
      await member.send(embed = muteembedmember)
      await asyncio.sleep(mutetime * 60 * 60)
      await member.remove_roles(mutedRole)
    elif end_time == 'd':
      await member.add_roles(mutedRole, reason = reason)
      await ctx.send(embed = muteembedserver)
      await member.send(embed = muteembedmember)
      await asyncio.sleep(mutetime * 60 * 60 * 24)
      await member.remove_roles(mutedRole)
    else:
      await ctx.send(f'**You entered the wrong time!(Example: 10s,10m,10h,10d)**')

#unmate command
@client.command()
@commands.has_permissions(manage_messages = True)
async def unmute(ctx, member:discord.Member):
  guild = ctx.guild
  mutedRole = discord.utils.get(guild.roles, name = 'Muted')
  await member.remove_roles(mutedRole)
  await ctx.send(f"{member.mention} Successfully unmuted by {ctx.author.mention}.")
  await member.send(f'You were unmuted in the server {guild.name}.')

#ban command
@client.command()
@commands.has_permissions(ban_members = True)
async def ban(ctx, member:discord.Member, *, reason = None):
  guild = ctx.guild
  if reason == None:
    reason = f'None'
  else:
    reason = reason
  if ctx.author.top_role < member.top_role:
    await ctx.send(f"You can't ban members with a higher role than you!")
  elif ctx.author.top_role > member.top_role:
    await ctx.guild.ban(member, reason = reason)
    await ctx.send(f'{member.mention} Successfully banned by {ctx.author.mention} for reason {reason}.')
  elif ctx.author.guild_permissions.administrator:
    await ctx.guild.ban(member, reason = reason)
    await ctx.send(f'{member.mention} Successfully banned by {ctx.author.mention} for reason {reason}.')
  else:
    await ctx.send(f'Error')
#unban command
@client.command()
@commands.has_permissions(ban_members = True)
async def unban(ctx, *, member):
  bannedUsers = await ctx.guild.bans()
  member = await commands.converter.UserConverter().convert(ctx, member)
  for ban_entry in bannedUsers:
    user = ban_entry.user
    if user.id == member.id:
      await ctx.guild.unban(user)
      await ctx.send(f'{user.mention} Successfully unbanned by {ctx.author.mention}.')
    elif user.id != member.id:
      await ctx.send('User not banned!')
    else:
      await ctx.send(f'Error')
#Connect
client.run(config.TOKEN)

Надеюсь мой ответ помог.
P.S вы забыли client.process_commands(message)