How to Mod games on Xbox Series S

You cannot mod Xbox games. It is a secure platform

A handful of games like fallout and farming simulator have the ability to download mods from inside the game. If you can't download inside the game, you cannot use it

Because on my Xbox series x, it only shows 'Optimized for series x/s' but if a xbox series x version of a game is NOT 'optimized' how would i know if I'm playing a series x/s version of a game?

It's very easy how to check which version of the game you bought. Check the game case. If it says, Xbox One & Xbox Series X|S, then you have the Xbox One version of the game. If it just says Xbox Series X|S, then you have the Xbox Series X|S version.

Hi,

I'm not sure where you got the 'every game will be 120 fps on Series S' from. The Series S will be capable of 120 fps, but that may not be possible on every game.

As for Xbox One games at higher frame rates, that's possible, but it will only be on certain games. Plus, such features have to be patched in either by the developer or via the BC team. Xbox One games won't automatically run at higher frame rates on Series
X or S.

This is how Xbox Series S backwards compatibility really works

While I can appreciate your interest in more mods for Fallout 4, this is really just a community forum and none of the official Microsoft team or Bethesda will see your post. You should try pitching this to them directly.

In any case, to support more mods Fallout 4 would need to be updated to a full Series X|S title. The recent update is a backwards compatibility X|S update, it's not a native Series X|S title.

Only the Series X has extra RAM. The Series S has the same amount as the original Xbox One and the One S. Plus, the PC modding community for Fallout 4 generally have PCs with much higher memory availability than what's available to a console.