English usually uses the verb: "How much does sb weigh?" Note though that in most English-speaking countries asking about someone's weight is culturally frowned upon. It's one of those things one is not supposed to ask about outside of a medical environment.

Thank you . I know It's impolite to ask about one's weight .in fact , I won't do like this. It's an exercise in my exercise book, I don't know how to do it.