There's a 2018 Sinicia episode for with Rogier Creemers who did first summary of systems:
https://supchina.com/podcast/mythbusting-chinas-social-credi...
A 2019 compilation of experts: http://socialcredit.triviumchina.com/what-is-social-credit/k...
Otherwise the system is still very new and in progressive. If it's anything like BRI, it could be a massive uncoordinated internal shitshow of competing jurisdictions and incentives that doesn't pull together into anything cohesive for a long time.
OT but this is the first time I see China's "social credit system" not being described as a myth on HN. People usually just repeat the myth pushed by mainstream media. Can you suggest something to read on this?