What is the `score` mean in json api?

[Lilly]

Hi @kongtaoxing welcome to Discourse Meta

Please use search first when looking for support solutions.

In this case the first topic in search results will likely contain your answer:

"Score" in JSON APIs

Ah - that’s because you have a featured topic. Score is an attribute of topic. It’s calculated by the server to help determine a number of behaviors, including what posts get sent in your digest emails.