If we are talking about someone's "choice" as general, like what kind of clothes that person likes:
You have a bad choice. (I don't like your choice)
You have a good choice.(I like your choice)
Do these sound natural?
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Sign up to join this communityNo, they don't. "Have a bad/good choice" is grammatical, but does not mean what you seem to want.
"You have a good choice" would mean that you have a choice between two or more good alternatives. For instance, if you are in an excellent restaurant and there are several dishes you would like to try.
"You have a bad choice" would mean just the opposite. E.g. if you have to choose between going hungry and paying for heat.
To say what you want to say, add "made" between "have" and "a" in either sentence.