So I’ve installed Big Sur on my 2020 13" MBP (Intel) and I can’t seem to get Touch ID to work at all. It was working just fine before on Catalina. Whenever a password dialog comes up I have to type it in by hand, there’s not even an option for Touch ID. Touch ID prefs showed boxes checked at first. After a reboot login boxe shows unchecked, but password autofill still checked. Checked login box too, was asked to enter password, password accepted, closed prefs. Still nothing. Go back to prefs and see boxes showing unchecked again. WTH?
Also noted, cannot check box for iTunes Store. It will simply not accept a click and put in a checkmark. It’s not grayed out or anything, just won’t react to clicking.