What is a 1927 20.00 us liberty gold coin gold coin worth?

With date of 1927 it has to be a $20.00 Saint-Gaudens coin not a $20.00 Liberty Head coin.Without seeing the coin and assuming no mint mark, retail values for circulated coins run from $1,270.00-$1,570.00 and uncirculated at $1,650.00+. I suggest you take it to a dealer or collector for a more accurate evaluation.