Have a look here at the knowledgebase: https://generatepress.com/knowledgebase/using-menus/
There you can find instructions on how to make a drop-down menu, then you can add your posts there. You might want first to create a blank “reviews” page.
In case you don’t see the posts option, check screen options at the top of “Appearance” > “Menus”
Agressively support the kind of work you want to see. Buy it. Talk about it. Review it.