How to pair my Apple Watch to my new phone
Pair Apple Watch
iPhone 8 Plus, iOS 16
Question marked as
The tags appended to you note suggests that you have and iPhone 8 Plus.
If the Apple watch is newer it probably has the watch OS of 10 or later.
The Apple watch with OS 10 or later requires and iPhone with IOS 17 or later. The iPhone 8 will not update to IOS 17.
If you have an iPhone with IOS 17 or later then here is the Apple document for setting up.
Set up your Apple Watch - Apple Support