I am trying to unpair my broken I watch from my iPhone 12. How?

Here are two ways to unpair your watch if you no longer have the paired watch

• See the 'How to unpair your Apple Watch from your iPhone' section of:

Unpair and erase your Apple Watch - Apple Support

• With a web browser, go to: https://www.iCloud.com and sign in with your Apple ID. Open Find My iPhone and select All Devices (at the top). Then click your Apple Watch, select 'Erase Apple Watch', and select Next until the device is erased. Finally click "X" next to remove your Apple Watch.

You're welcome.