@soilwizard I have done a bit more digging on the steam support pages.

Xbox one controllers are only supported over a wired connection currently:
https://help.steampowered.com/en/faqs/view/6424-467A-31D9-C6CB

If anyone has managed to get either a Bluetooth connection or 2.4 GH with a dongle to steam link on rpi working please let me know otherwise I'll assume it's currently not possible.

@wmarcio how do i access the file through the terminal?

You should try out the xpadneo driver: https://github.com/atar-axis/xpadneo

see the section under install. This is specifically designed to work with the bluetooth xbox one controller model 1708.

@meleu did earlier and it worked charms, thanks!

Sorry for reviving an old topic, but installing these drivers https://github.com/atar-axis/xpadneo worked for me. One thing to keep of note is when configuring the controller to make sure it matches what it says here for a Logitech Controller https://retropie.org.uk/docs/Logitech-Controller/#l2r2-top-triggers that L2 and R2 need to be +. After that select, and every other button, worked fine for me.