Connect your Polar H10 to Galaxy watch 4/5. This is how one can do using Google Fit & sync it to Samsung Health. : r/GalaxyWatch
FitnessSyncer joins your health and fitness clouds into one Dashboard and Stream. Supporting over 50 health and fitness providers, including Fitbit, Garmin Connect, Samsung Health, Google Fit, RunKeeper, and more!
Top 3 Samsung Health compatible scales - MyHealthyApple
How to export fitness data from the Samsung wearables (and Samsung Health app) | DC Rainmaker
Connect your Polar Device with Walkingspree – Walkingspree Support Desk