Just $20.
Valuable serial numbers could be:
-million-numbers (3000000, 8000000, etc)
-radar notes that read the same forwards as they do backwards (3365633, 4300034, 8765678, 7777777, etc)
-low numbered notes (0000999 or less)
Your number doesn't fall into the above. Interesting number for sure, but not one with an actual book value. If you find someone to give you more than face value for it, I'd be surprised and would congratulate you!