My finace is a hungarian citzen and i am canadian. we met in the uk almost a year ago and he's coming home (calgary) with me in june. To save extra money for the wedding he thought he might try to work. If he has an LMO approval and a copy of his job offer can he apply at point of entry.

No, a Hungarian citizen, other than a Permanent Resident of the USA, must apply for a work permit at a visa office abroad.