My iPhone unlock is not work why? It is stopped suddenly and it's new

I'm sorry but your post doesn't make much sense. Can you try to phrase it in a different way? What lock are you talking about? Carrier lock? Activation lock? Passcode lock?

If English is not your native language, feel free to use whatever language your most comfortable. with.

Was the Touch ID clean, if not use a lint free cloth.

Also try registering the fingerprint again, this time use all different angles even doing it upside down.

Use Touch ID on iPhone and iPad - Apple Support