As far as I know, (and correct me if I'm wrong), China didn't have a credit score system as developed as what we're used to in the US (i.e. Equifax, TransUnion, etc.)
But what the social credit system represents is a leapfrog over that to something much more invasive and ubiquitous. I don't want to know if my contractor once smoked in a no-smoking area, of if they buy too many video games. But I do want to be able to check their contractor's license and make sure there aren't complaints.