if you give money돈을 주다 means “to give money,” and -면 means “if” or “when.” The subject of 주다 can change depending on context, so this may also mean “if they give money” or “if money is given.”
KO: 돈을 주면 이 일을 도와줄게요.
EN: If you give me money, I’ll help you with this.