So Stremio works like a database of sources of a video, so you’ll see an entry for a movie/series/etc and it will show if Netflix, Hulu, Peacock, etc has it available. When you get certain plugins installed for Stremio, it will show you listings not just from non-torrent sources it will show listings from torrent sites as well.

Then you can scroll down the list and click the entry that you want to try to view.