How to enable AutoRecover in Office for documents you store on your PC

Step 1: Open MS Word and Click on the File menu.

Step 2: Click on Options.

Step 3: Click on Save. And under the “Save documents” section, check the “Save AutoRecover information every (X) minutes” option.
Quick Tip: It’s also a good idea to check the Keep the last AutoRecovered version if I close without saving option
to add an extra layer of protection.

Once you completed these steps, moving forward, documents that you create on any Office application
(such as Word, Excel, and PowerPoint) will save automatically every 10 minutes.

Credit : https://www.windowscentral.com/how-manage-autosave-office-apps-windows-10