I can’t updaters my Apple Watch,please help me

Update your Apple Watch

Update your Apple Watch using your iPhone · On your iPhone, open the Apple Watch app, then tap the My Watch tab. · Tap General > Software Update.

If your Apple Watch has watchOS 6 or later, you can install updates without your iPhone:

1. Make sure that your watch is connected to Wi-Fi.
2. On your watch, open the Settings app.
3. Tap General > Software Update.
4. Tap Install if a software update is available, then follow the onscreen instructions.

Update your Apple Watch - Apple Support (IN)