Did you read the post directly above yours, in the thread you posted in?
How to remove "Apple Watch Locked to Owne… - Apple Community
For your convenience, here’s what javeliga posted,
>>Activation Lock is designed to prevent anyone else from using an Apple Watch if it's ever lost or stolen.
About Activation Lock on your Apple Watch - Apple Support
Activation Lock is an anti-theft feature that cannot be bypassed. Only the previous owner can remove the lock by using their Apple ID & password. Apple will not help you find the previous owner. If the previous owner cannot or will not remove the lock, then the watch is useless to you or anyone else.
You need to follow these steps:
How to request access to a deceased family member's Apple account - Apple Support<<