Apple Watch
my old Apple Watch is connected to a old iCloud I have no idea what the Apple ID could be or the password I want to connect to a new icloud how could I do that???
Question marked as
the activation lock is not really on the watch it's a
theft protection measure on apples servers
it needs to be removed
About Activation Lock on your Apple Watch - Apple Support
if you don't know your appleID
if that does not help you then you need the assistance of apple
Additional Support - Activation Lock (apple.com) and or
Get Support (apple.com) , Genius Bar Reservation and Apple Support Options - Apple