You can display your products either as a separate site page, or as a section on the home page. Let's cover both options.
Catalog as a site page
Go with this one if you want to show the catalog/store menu in the header:
1. In Website editor, navigate to the Homepage Sections > Header & Menu
2. Under Navigation Menu, click Add Menu Item
3. Submit a title (let's say, "My products") and choose "Go to store" as the Action on click:
On the right, you'll see the preview of how this item will be positioned in your site header.
If you put your products under several categories, you can select to show the categories on hover in this header menu: toggle on setting Show categories on menu hover
5. Click Publish to make the changes live.
Catalog as a Homepage section
1. In Website editor, navigate to the Homepage Sections and click Add Section button
2. You should pick up Products and choose how the products will be displayed: by category or as featured items: