Only wearing braces can correct you.
If your teeth are crowded, you have to have your teeth pulled out.
The general correction time is 1-2 years, and the braces are 1 year.
Finally, it depends on your progress.
I didn't start to correct until I was 20 years old. It's not a beating.
Prices vary from place to place.
I suggest you go to several hospitals for consultation.