Hello, Covid19Hawaii.
You can see if files are getting backed up to the Time Machine drive by clicking the Time Machine icon in the menu bar and clicking "Enter Time Machine". (If the icon is not in the menu bar, go to System Preferences > Time Machine and check the box to Show Time Machine in menu bar.)
When you have entered TM your screen should look something like this:
Back up your Mac with Time Machine - Apple Support:
https://support.apple.com/en-us/HT201250
View and restore past versions of documents on Mac - Apple Support:
https://support.apple.com/guide/mac-help/view-and-restore-past-versions-of-documents-mh40710/11.0/mac/11.0
Restore items backed up with Time Machine - Apple Support:
https://support.apple.com/guide/mac-help/restore-files-mh11422/mac