Forgot my passcode
I haven’t used my Apple Watch in over 1 year… I can’t remember my passcode… I also have a new iPhone
Apple Watch Series 3, watchOS 6
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Re: "I haven’t used my Apple Watch in over 1 year… I can’t remember my passcode… I also have a new iPhone"
Apple Support's online article (link below) can help you pair the Watch with the new iPhone:
(The Watch will likely need updating for compatibility with the new iPhone:)
How to pair your Apple Watch with a new iPhone - Apple Support
and
What to do: If you forgot your Apple Watch passcode - Apple Support
If needed : Apple Watch Support website (info. / support / contact options etc.)