Question about Fitbit Charge 6

The smartwatch is not directly compatible with Samsung Health. Fitbit devices primarily synchronise their data with the Fitbit app. However, there are third-party apps such as "Health Sync" that can be used to transfer Fitbit data on Android devices to Samsung Health, but this is not an official or native integration. The Fitbit app itself runs on Samsung smartphones, but a direct connection or synchronisation with Samsung Health is not officially supported by Fitbit.