How to get RetroArch on your Xbox One is that you will need a Developer account which is about $15-20
Please read this before attempting this [HIDE] https://docs.microsoft.com/en-us/windows/uwp/xbox-apps/devkit-activation [/HIDE] you will need to do this first to activate DevMode on your Xbox
Once you have activated and in DevMenu you will have to go to the PC and go to the Xbox Portal
you need to insert this into your search bar on the PC to get to the Portal [HIDE] https://xboxone:11443 [/HIDE] or your xbox IP with the 11443 at the end
Things to do
Click on Add and then choose your RetroArch File and wait to install wait for it to install and enjoy here are some videos on how to Add Roms and Change icons and backgrounds and also show Menu ingame.
Download
[HIDE] http://www.mediafire.com/file/3ytj6rc4g6o0p53/Retroarch+1.5.7+105+Cores+With+Controller+Fix.7z [/HIDE]
This is on how to change Background and Effects
This is on how to get icons to show up
This is how you add roms
This is how to bring up the menu in-game
Thanks to Dominater01 for building the App