I have a 1972 Plymouth Scamp that's been sitting for 25+ years, how much is it worth?

Welcome! With that one picture it’s gonna be tough for anyone to toss an educated price to you. It looks like it’s missing trim (headlight and headlight trim at a minimum).

Best to unbury the Scamp and take a bunch of photos. Looks like it’s gonna take a while to get to the Scamp given how close other two cars are parked beside it.

Do any of the cars run? Could be a day job hauling the cars out.