Hey there sunshineandrain_,
Thanks for reaching out to the Apple Support Communities. To get started, did you set up location sharing with your family using the steps in the following resource: Share your location with your family - Apple Support
Share your location with a family member
You can share your location in Settings or the Find My app, and you can stop sharing your location at any time.
If you already set up a Family Sharing group
In iOS 16 or iPadOS 16 or later:
1. On your iPhone or iPad, go to Settings.
2. Tap Family.
3. Tap Location Sharing.
4. Under Share Your Location With, tap to choose which family members to share your location with.
In iOS 15 or iPadOS 15 or earlier:
1. On your iPhone or iPad, go to Settings.
2. Tap your name, then tap Family Sharing.
3. Tap Location Sharing.
4. Tap Share My Location.
If so, does your son have an iPhone that the Apple Watch is set up with? If he does, in Settings > Privacy > Location Services, is Precise Location enabled here as well? If not, try enabling this setting and test the issue again.
Check out this link for more details: Turn Location Services and GPS on or off on your iPhone, iPad, or iPod touch - Apple Support
How to share your specific location
With iOS 14 and iPadOS 14, some apps can use Precise Location to get to your specific location. To share only your approximate location — which may be sufficient for an app that doesn’t need your exact location — turn Precise Location off. Here's how:
1. Go to Settings > Privacy, then select Location Services.
2. Select an app, then turn Precise Location on or off.
Learn more about privacy and Location Services.
Let us know if that's able to help.
Have a great day!