Welcome @nebo333!
What kind of products do you have in mind?
In general, people on the Fediverse flee the ad-overloaded corporate social media, but there are occurrences of interesting things to do, like handling donations, peerfunding, and micro-payments. There are two relevant FEPs on FEP-0ea0: Payment Links and FEP-8c3f: Web Monetization, as well as Questions about payments that could be of interest to you.