Hello Willowgirl08,
Thank you for posting in the Apple Support Communities. We're here to help with Zoom on your Apple Watch.
First, try restarting both your iPhone and Apple Watch. This might sound simple, but it can resolve some unique issues.
Restart your iPhone
Restart your Apple Watch
From there, let's be sure both devices are fully updated since fixes are included with each update. If an update is available, we suggest having a current backup to iCloud or to a computer, first.
How to back up your iPhone, iPad, and iPod touch
Update your iPhone, iPad, or iPod touch
Update your Apple Watch
If the issue persists, try unpairing the Apple Watch from your iPhone, then pairing it again.
Unpair and erase your Apple Watch
Set up your Apple Watch
If this concern continues after taking the steps above, our resolution is to contact Apple Support directly. Depending on your region, you may be able to reach them here:
Get Support
We hope this information is useful. Kind regards.