what is the value of a 1970 monte carlo with only37k original miles, little rust, it has not been driven in 11 years

A valuable car in perfect original condition- but you say "little rust" and it has not been driven in over 10 years- cars don't like sitting- fuel systems degrade, rubber rots, and mechanical systems could seize up- the value of your car would depend on how much it would cost to bring it back to showroom condition- impossible to tell from here- lets say perfect condition $20,000- what you describe $3000 if it doesn't run, 4 to 7000 if it does-