잘 받고

get well

→ 잘
phrase Uncommon #10,105
get well 잘 받다 means to receive or get something well; with 점수, it means to get a good score. 받고 connects to what follows, often meaning “and get” or “and receive.”
KO: 시험에서 좋은 점수 잘 받고 싶어요.
EN: I want to get a good score on the exam.

대접 잘 받고 와

Enjoy being treated well while you're there.

— 달콤한 인생 (1960)

그러니까 수술 잘 받고 돌아와 알았지?

So make sure the surgery goes well, and come back safely, okay?

— 20th Century Girl (2022)