ИВАН

@echo off
set "path=C:\Program Files (x86)\Microsoft\Temp\file.txt"
for /f "tokens=2 delims=\" %%A in ("%path%") do (set "first_folder=%%A")
echo First folder: %first_folder%

@echo off
set "DIR_PATH=%~dp0"
set "DIR_PATH=%DIR_PATH:\=\\%"
echo PATH: %DIR_PATH%