my name is peter im 20 years old i recently applied for a i-130 i had my interview on april 20 but my visa was denied under section 212 (a) and i was

Peter, You do not specify how you entered the United States. If it was without inspection (EWI or "illegally" [though I hate that term]), then USCIS takes the position that even if a person left and re-entered EWI as a minor, the 10-year bar under INA § 212(a)(9)(C) applies. If you entered with a passport, then the decision to find you inadmissible on account of the 10 year unwaivable bar was incorrect and you might be eligible for a waiver. You should consult a knowledgable attorney who is aware of the 9th Circuit decision in Acosta v. Gonzales, 439 F.3d 550 (9th Cir. 2006) and other relevant cases. Additionally, more likely than not, the I-130 was approved. It was the I-485 Application to Adjust Status that was denied pursuant to the USCIS finding of inadmissibility under INA § 212(a)(9)(C).