Your camper is basically worth $0, and anything you spend on it will not improve its value, so consider that.
As far as repairing it, you mention a carport which is not allowed, so you’re willing to spend at least a couple few thousand $ ?
Put the money towards another camper.
Without any knowledge or diy abilities, you will only spend a lot of $ having some schmuk patch up your camper.
Your neglect of the camper will cost money to get rectified. Don’t spend the money on that camper.
Sorry to sound blunt, but if what you say is true, the camper is junk now. And even if it wasn’t, it’s still worth virtually nothing. Maybe a couple grand, but sitting on a seasonal and what you describe , it would prolly cost more to just make roadworthy than it’s worth.