How can I get my my Apple Watch to sync with my phone?

Hi

Follow the instructions here, if necessary including unpairing and re-pairing your Apple Watch - including if either or both of your devices indicate that they are connected, but they do not behave accordingly:

• If your Apple Watch isn't connected or paired with your iPhone - Apple Support
• Unpair your Apple Watch and iPhone - Apple Support
• Set up your Apple Watch - Apple Support

If your Apple Watch still can't connect, unpair your devices, then pair them again:

1. On your Apple Watch, tap Settings > General > Reset > Erase All Content and Settings.
2. On your iPhone, open the Apple Watch app, tap the My Watch tab, then tap your watch at the top of the screen. ...
3. Pair your Apple Watch and iPhone again.