How would I go about making a Catolog type-game?

Hello to whom ever may be reading this. Before I get into this post, I would like to say that I don’t think this is the right category. Please forgive me! But anyways, How exactly would I go around making a game where you can try on catalog items? I’ve watched videos where Other developer(s) have made games like that, and In intrested. Please get back to me if you can!