A family of Microsoft word processing software products for creating web, email, and print documents.
As you have noticed, Repair Now does not necessarily work. On the contrary, we see many reports in Q&A that it doesn't work.
Do the following: Exit all Office apps. In Windows Settings, go to Installed Apps and locate your Microsoft suite (Office for a perpetual license or Microsoft 365 for a subscription) and start an Online Repair. For more, see https://support.microsoft.com/en-us/office/lifecycle/repair-an-office-application.
Before you begin, verify that you can access your account at https://account.microsoft.com/services and that your Office product is associated with it. That way, you know that you can reinstall Office, which is usually the final step of an Online Repair.