make a buck 賺錢

A: Oh, no! I forgot to bring my wallet. Can you lend me a couple of bucks?
B: Sure. Here you go.
A: 噢不！我忘了帶錢包，你可以借我一些錢嗎？
B: 好啊，拿去吧！

from https://buzzorange.com/vidaorange/2018/02/06/slang/