Can a 12 year old get marrierd with there parental permission?

It depends on what state you in. In most states the age to marry with parents consent is 18-19. To marry without parental consent is 16-17. Any younger than that is illegal. Excluding the following with their age to marry without consent:

Hawaii: 15

Massachusetts: Male-14 Female-12

Missouri: 15

New Hampshire: Male-14 Female-13