Above.
Having played several games this month with easy achievements, I have a ton of ideas for cool platform games and other stuff I could try and make in Unity, and I would like to release these on Xbox as well as possibly Android and IOS.
However, due to disability discrimination issues (IMO), I can’t get a job, do I have to work for a company to get the license to make Xbox games?
You don’t have to work for a company but you do have to have a legally registered business. Creating one is a simple matter of paying a fee based on the area you live in and submitting some paperwork.
Just be aware like I have mentioned in the past the console developer kits are only available for Windows. You can use a virtual machine or a cloud instance of Windows to make the builds.