what's it worth (to you)? idiom informal mainly humorous
对我会有什么好处呢?
said when you want to know what someone will give you if you give them the piece of information they have asked for
"Do you know where Dave's living now?" "What's it worth?" “你知不知道戴夫现在住在哪里？”“告诉你对我有什么好处？”