A family of Microsoft word processing software products for creating web, email, and print documents.
1
The best first option is to perform a full repair of your Office installation.
Open the Settings App (gear icon on your Start Menu)
Go to Apps, then scroll down to find Microsoft Office
Select that and choose Modify - Online Repair
That should fix any issues with your Office Installation.
2
If that does not resolve the problem, please provide a screenshot of the error you see when you try to use the Office apps like Word.