my watch is not receiving notification with phone calls

First, on your iPhone tap on:

Watch > My Watch > Notifications > Phone

and make sure Mirror my iPhone is selected.

If that is OK, I believe incoming phone calls work like other notifications. Notifications go to either your Apple Watch or iPhone, but not both. If your iPhone is unlocked, you'll get notifications on your iPhone instead of your Apple Watch. If your iPhone is locked or asleep, you'll get notifications on your Apple Watch, unless your Apple Watch is locked with your passcode. For more info, see:

Notifications on your Apple Watch - Apple Support

I am having the the problem and Mirror my my iPhone was definitely selected. It still isn’t working. 😥