Samsung Android API is for Tizen OS Based watches and that Health partnership is not longer available.
Galaxy Watch4 and newer use Wear OS 3.x and you use Wear OS Health Services for that.
There are some blog tutorials created in 2022 that should help you get started.
For Wear Health Services see the Android Documentation
Here are some links to help you
Health Connect
Health Services
Health Platform API
Hope this helps,
Ron
Samsung Developer Relations