But credit cards are linked with banks. This means Visa, MasterCard etc all implement a credit score system for banks.
Wait, are you saying that bank credit core system is similar to social credit score? You must be joking. These are not the same, not even close.
When bank loans you money it wants to know how if you have a stable job, if you have other existing loans and such.
A social credit score is when they check your recent posts on social platforms to see if you support the government and decide if they should loan you money based on that.