Try these
https://www.intowindows.com/fix-settings-app-not-opening-in-windows-10/
this might help (sort of depends which update you got, if it took ages to install, it might have been latest version update and one of these commands doesn't work right yet
right click start button
choose powershell (admin)
type
SFC /scannow and press enter
once its completed, copy/paste this command into same window:
Repair-WindowsImage -Online -RestoreHealth and press enter
SFC fixes system files, second command cleans image files, re run SFC if it failed to fix all files and restart PC
windows version - wonder if this works
right click start
choose run...
type winver
and press enter
if it works a pop up should show what your version is. Latest is 2004 Build 19041.264