That's a common misconception about what China is doing and why they are doing it. Social Credit is not based on your Facebook or Instagram likes or activity. China had a huge issue of new low-class citizens becoming middle-class and upper-class, but it happened so fast that these new citizens had no "training" on how to be in this new class, mainly behaving in public. There were huge issues of people acting out without any kind of constraints, a good example was opening emergency doors on airplanes when they had no idea what was happening in cases of flight delays. Without any proper "training" or your generational family teaching you how these things work, HUGE portion of the population were acting irrationally in public, not knowing how restaurants, social events and international travel works. China tried many educational, training systems, but most of the people might not even went to high school. So, Social Score system was made. It's a bad name for it, and it's more of a Behaving Score, but Social made sense as it is in public. Social Score is simply given to citizens and counted down if they break simple rules, like not buy a ticket on a bus, cheat any kind of process, misbehave in public, drink in public etc. It has nothing to do with Facebook, Twitter or Google.