He was a rabbi. OTOH, I don't know what the customs of the time were regarding ordination, if any, of rabbis. Authoritarians like the Pharisees of the time loved to control who is ordained and who isn't. Nonetheless, one doesn't have to be ordained in order to be a student of scripture.While Jesus obviously was well versed in scripture, he must have studied on his own, in his spare time.
One of the chief complaints about Jesus that attempted to discredit his teaching was that he was not officially trained in scripture, not an expert.
No, Jesus was addressed as rabbi out of deference to his popularity among the common untrained rabble who the 'experts' feared..
He was considered by the 'experts' to be a pathetic unrepentant and shameless sinner who was out of his mind, a froward person who was misleading people, a glutton and a drunk who ran around with sinners and prostitutes proclaiming incomprehensible hubris.
more sunday school BULLSHIT a GLUTTON no less sheeesh