Making a new module

Hi,
I’m very new to this, so I will need help in simple terms.
I am trying to build an online store using wordpress with the theme quest.
I am trying to connect my products to my pages. I think I need to do it through the modules in page builder. But ‘products’ is not available for selection.
I am wondering how I get my products onto the page builder.
Maybe I’m going about it all wrong??? :[