How to Refresh Software Update on Your Mac

The release of macOS Monterey is imminent.  You can refresh Software Update on your Mac to see when it’s ready to download and install.
Refresh Software Update on Your Mac
To refresh Software Update on your Mac:

Open System Preferences
Click on Software Update
Click in the middle of the Software Update dialogue box so that the cursor is not in the search window.
Wait until your machine stops checking for a new update.
Press Cmd+R