Those scooters are actually designed to be semi-disposable. Body parts availability is about nil because models change so fast, and the engines aren’t really of sufficient quality to last more than the life of the oil.
They’re junk, basically. Buy new, ride until it dies, and throw it away.

Was hoping to find a places that is known for working on them. There are places out in College Park, but that's not convenient from Bethesda.

you could probably take it to small engine repair shops near you or a gas station nearby. can't be that much to do right?

Right now, it is just regular maintenance / tune up, but in the past have had to repair damage from thieves breaking random stuff.

What’s wrong with it?

Does anyone know of a good place near Bethesda for maintenance and repair of 50cc scooters?