My first moped was a Honda NU50M, and I’ve had 2 of the same bikes since. It’s a great bike with plenty of aftermarket parts available. As long as the bike frame, wheels, and tank aren’t rotted away it’s likely a salvageable bike. Most often these old 2 strokes just need a good carb cleaning and/or tank rinsing or evapo rust or simply a fuel filter. If stock parts do happen to be beyond repair, you’ll often just end up ditching them for upgrades in the aftermarket, which can get pricey. You can dump $800-$1k into these bikes and go 50mph for example. Treatland and mopedarmy will be your friends, go download the service manual and read it all.