To edit your Shop Page, access it through the "Page Manager" (the first button of the PageBuilder buttons menu)
Open "Customize Shop Product Page"
Change the layout of your page and if you want to edit the product itself double click on it to access to its brush and click on "Customize Shop product details design"
Open the shop product brush
The builder will open inside the layout of your product. You can add / remove elements inside. In the brush , a special section is added "Shop product component" to bind which element is the name, the price, the checkout button, ...
You can design the product page the way you like, your only limit is your imagination