I have NowTV on my Xbox Series X will it show this game tonight on it?
The game is on the red button service (NOW Bonus Sports Stream).
See this link page below.
Just checked my NOW TV box and the Fulham v Birmingham match is showing available at 7.40pm tonight under the Sports Bonus Stream towards the bottom of the NOW App home screen page.
So if you have a full blown NOW monthly Sports Membership (not Mobile Sports Membership) you can watch on any supported devices identified in the FAQ from this link page below.
If it's not currently showing yet on your Xbox Series X it should appear before the match starts.