A mobility scooter is heavy, battery powered, and not something to lift by hand. Load it under its own power up a ramp, follow the battery's transport rules, and strap it down well against tipping.
Pro tip: If your scooter is a travel model designed to disassemble, practice the breakdown once before moving day so you are not learning the sequence under time pressure.
Watch out: Follow the battery manufacturer's transport guidance exactly, especially for lithium batteries, since damaged or improperly secured battery packs are a fire risk in an enclosed vehicle.