Getting my record expunged...?

The process is different for each state. You should google expunge criminal record [state name]. This should bring it up. It can cost as much as a couple hundred dollars in court fees. You must petition the court to have it expunged. In some states, it is impossible to have your record expunged until you are over 70 years old. Because you were a minor at the time, it may be possible to have the record sealed, which is different, but achieves almost the same effect.