Microsoft Money was discontinued in 2009 so obviously it is not "officially" supported on Windows 11. However, many people used it on Windows 10 and some users report that it works just fine with Windows 11.
This user said the following about Money not working on Windows 11:
Money requires Internet Explorer which is missing in Windows 11 so
that could the reason why [it doesn't work,] and unless one used the patched mnyob99.dll,
there can also be other problems
Best case: you have to do some work-arounds to get it to run (downloading an edited .dll or similar).
Note: I don't personally use Microsoft Money.