Thanks for asking the Apple Support Communities for help with your Apple Watch. I recommend the following steps.
First, unpair your Apple Watch and iPhone: Unpair your Apple Watch and iPhone - Apple Support
Then, restart your Apple Watch: How to restart your Apple Watch - Apple Support
Restart your iPhone: Restart your iPhone, iPad, or iPod touch - Apple Support
Once this is done, you can re-pair the devices and test if the issue is working properly: If your Apple Watch isn't connected or paired with your iPhone - Apple Support
Thanks and have a wonderful day.