볼 일이

something to do

→ 보다
phrase Rare #24,334
something to do 볼 일이 있다 means to have something to do or business to attend to. With 없다, it can mean there is no reason or occasion to see someone.
KO: 은행에 볼 일이 있어요.
EN: I have something to do at the bank.

여기에 볼 일이 있었거든

I had some business to take care of here.

— 색, 계 (2007)

앞으론 서로 볼 일이 없을 테니 안됐군

It's too bad we'll never see each other again.

— 패신저 57 (1992)

문 열어, 볼 일이 있어서 그래

Open the door. I need to talk to you about something.

— 아마코드 (1973)

나 한테 아직까지 볼 일이 남았나?

Is there still some unfinished business between us?

— 미인어 (2016)