A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
1
Press and hold the Ctrl key on your keyboard while opening Excel to open Excel in Safe Mode, does Excel open correctly in Safe Mode?
2
Of not, the best option is to perform a full repair of your Office installation.
Open the Settings App (gear icon on your Start Menu)
Go to Apps - Installed Apps, then scroll down to find Microsoft 365 (Office).
Select that and choose Modify - Online Repair
That should fix any issues with your Office Installation.
3
If that does not resolve the problem, click your Start Button, type winver and hit Enter
Please provide a screenshot of the resulting dialog.