To view how many points each tracked activity is worth, head over to the Connected Apps tab, select an app, and tap the Tracked Activities view. Google Fit currently only allows us to sync with exercise to your account but only 6 points can be earned for each.
With Google Fit, we are unable to verify that an activity occurred, unlike other connected apps, where we can verify that you took a certain number of steps. Because we are unable to verify the activity occurred due to what the Google app sends us, all exercise and steps are treated as manually entered activities (or unverified activity). All manually entered activities are automatically awarded 6 points, regardless of the length or intensity of activity. You can find additional information on the difference between verified and unverified activity here.