Word 365 hangs and have to use the force quit option over and over. continues after Apple support call.

Yes, I understood that you contacted Apple and they suggested booting up your Mac in Safe Mode, and that didn't resolve the issue. That's why I suggested that you contact Microsoft.

FWIW, I have been using Microsoft 365 for years now and have not experienced this issue with any of my Macs, even with those running the latest version of macOS Big Sur.

Two other things you can try before contacting Microsoft:

1. Create a new user account on your Mac. Log out of your current account, and then, log back in with the new account. Trying accessing the Word app now to see if you can close it without any issues.
2. Run an EtreCheck report. If you need assistance with interpreting its results, you can post those here. EtreCheck is a diagnostics tool that may determine if there is something amiss with your Mac that you may not be aware of and potentially the reason for the problem with Word.

Ref: Using EtreCheck to Troubleshoot Potential… - Apple Community

Have you also tried contacting Microsoft Support on this issue? Do you have a Microsoft 365 subscription or using a standalone Microsoft Word app?

You're very welcome! ... and thanks for providing your solution. I'm sure it will help others having a similar issue with Word 365.