A family of Microsoft word processing software products for creating web, email, and print documents.
As the AI bot suggested, try an Online Repair. Exit all Office apps and then run the repair from Windows Settings; see https://support.microsoft.com/en-us/office/lifecycle/repair-an-office-application .
Since an Online Repair usually involves reinstalling Office, first make sure that you can access your account at https://account.microsoft.com/services and that Office is associated with it.