Вот код чтобы вывести ваши елементы:
async function getResponse() {
let response = await fetch('https://dummyjson.com/products')
let jsonList = await response.json()
let list = document.querySelector('.products')
let key
let elements = jsonList.products
elements = elements.splice(0, 3)
for (key of elements) {
list.innerHTML +=
`<li class="item">
<h5 class="small_panel">${key.title}</h5>
<div class="full_panel">
<img src="${key.thumbnail}" alt="${key.description}"></img>
<p>brand: ${key.brand}</p>
<p>category: ${key.category}</p>
<p>${key.description}</p>
<p>discount percentage: ${key.discountPercentage} %</p>
<p>price: ${key.price} usd</p>
<p>rating: ${key.rating}</p>
<p>stock: ${key.stock}</p>
</div>
</li>`
}
}
getResponse()
