I can’t not connect my Apple Watch to my phone

Bring your iPhone near your Apple Watch, wait for the Apple Watch pairing screen to appear on your iPhone, then tap Continue. Or open the Apple Watchapp on your iPhone, then tap Pair New Watch. When prompted, position your iPhone so that your Apple Watch appears in the viewfinder in the Apple Watch app.

Set up and pair your Apple Watch with iPhone - Apple Support

Not able to connect still? --> If your Apple Watch isn't connected or paired with your iPhone ...

Need more help?

1. Erase your Apple Watch.
2. Set up your new iPhone and sign in to iCloud. ... 
3. Open the Apple Watch app on your new iPhone, then pair your watch with your new iPhone.
4. Try to restore from a backup. ... 
5. Follow the onscreen steps to finish setting up.
6. Start using your Apple Watch with your new iPhone.

How to pair your Apple Watch with a new iPhone - Apple ...