Matt115
New member
I checked in googleSkyrim is most definitely on Gamepass as is Fallout 4 for both Xbox and PC versions. To my knowledge, most of the Bethsda games were added to Gamepass when MS bought out Bethesda last year. Some may or may no LONG be on gamepass, but that's besides the point.
I have never had Gamepass for PC, but I did play Skyrim on the console and at least as of the second release in umm 2017 or so, that version did have mods, HOWEVER they were heavily curated mods and there was no way to override that list on the console version. I have no idea about the PC version available from the MS Store if the could go and grab some random mod from Nexus or not though.

Kup mean Buy in polish
Only tes online is in game pass
Is Elder Scrolls on Game Pass?
With Xbox Game Pass, you get access to The Elder Scrolls Online. It also includes 10% off all Crown Pack purchases in the Xbox Game store as long as The Elder Scrolls Online is part of the Xbox Game Pass library.