Here's the repo: https://gitlab.com/vr-on-linux/VR-on-Linux
Even if you don't have VR hardware or software, you can help by checking reports by other users on Steam/ProtonDB/etc. You can contribute by sending updated info via a comment here or a pull request there!
I do know there's an issue with the Table of Contents not picking up VR Hardware Status and beyond, but I'm not sure how to fix it yet. Something to do with mkdocs or one of its plugins...
I like that the Android app is open source and available on F-Droid and that self hosting is an option, so I pay for premium so I don't have to deal with the hassle of self hosting while I support the developer!