Not connecting

If you have forgotten your Apple ID password – Apple Support

Currently you can change your Apple ID password using your iPhone and passcode.

Change your Apple ID password on your iPhone, iPad, iPod touch or Apple Watch

1. Tap Settings > your name > Password & Security.
2. Tap Change Password.

3.Enter your current password or device passcode, then enter a new password and confirm the new password

4.Tap Change or Change Password.

Then you can use that new password

If you have iOS16 or later on the iphone, Series 1 to 3 are difficult to pair because of relatively low storage but…

- Ensure the iphone is on iOS16.3 or later

- Erase the Watch completely. Put your watch on its charger and keep it there until you complete these steps. (select the watch OS version) Erase Apple Watch – Apple Support (UK)

- When pairing do not try to restore the backup, pair as a New Watch

You are off topic and also you have not given us enough information to help in detail.

Please post in a new discussion

The Model of Watch eg Series 7

The OS it is running, eg OS9.4 (Settings, General, About if you can see it)

The model of the paired iPhone eg iPhone 11

The iOS it is running eg iOS16.4 (Settings General, About)

State what you are doing or trying to do.

Tell us what is happening, what do you see, are there any error messages?

Not connected network what is the problem