Help for legal matters

I don't even really know where to begin with this. Back in October I had attempted to purchase a firearm. I have no criminal adult background, however I do have a sealed juvenile record. I was told even by the judge that at 18 my record would be sealed and would have zero bearing on my adult life. This incident happened back in 2004, I was 12. According to the lawyer I reached out to pertaining to this, a sealed juvenile record can still affect your second amendment rights until you're 30. Who knew? I didn't. He continued to say that many cops and judges are completely ignorant of gun laws and how situations like mine are all too common. The retention fee is $750. If this advances further where I'll have to go before a Judge, it'll cost me another $250/HR. As it stands I can barely make enough to support myself. Any donations no matter how small are beyond appreciated!

Also, before anyone else makes remarks, I attempted to make my purchase when I had money, my situation in the eight month span has altered with job hence my last sentence.