A 1990 Olds 88 might be worth as much as $300 as-is, and $400 in clean condition. Your car is probably priced comparably.
In a response you said this car is a classic. I disagree. The term “classic” implies some sort of cache that this car doesn’t have. I wouldn’t consider a 1985 Corvette a classic, even though it is more desirable than your Olds.