Juvenile court records are not considered criminal records--but they can hurt you if they are reachable by employers, landlords, and others. If you qualify, you should seal your juvenile record to avoid this result.
If you are a former juvenile offender, you may be able to clear your record by having your juvenile court record expunged -- that is sealed or destroyed. Expunged records are generally treated as though they never existed. That means you can tell potential landlords, employers, licensing agencies and others that you were never arrested or adjudicated delinquent as a juvenile.