As noted by 9to5Mac, some Mac users aren’t receiving prompts to upgrade to macOS Monterey 12.1, which was released Monday. The article says especially those owning M1 Macs aren’t encouraged to download the update when viewing System Preferences.
macOS Monterey 12.1 adds support for SharePlay, the Apple Music Voice Plan, the App Privacy Report, and more. Hopefully, you can obtain the macOS Monterey 12.1 update by going to Software Update > Software Update.