Yes. You need to download the Withings Health Mate App.
Then go to S Health settings and allow withings to track your steps and so on.
Once that is done, open withings (Create login, set up profile, etc), select your profile and choose google fit. activate Google Fit (it will ask you to grant access to the withings app).
From there, Open google fit. under the connected apps it should list withings. make sure it is active.
Its a little bit buggy and lags... but it works.