Most currency with unusual serial numbers has a small collectors base and usually not worth much over face value. Your bill misses all of the categories I'm aware of and is highly circulated, so spend it.
@Mary Neely Yours is not a repeater serial number This is - Mary.. Here is a good website for Fancy Serial Numbers - http://www.coolserialnumbers.com/FancySerialNumbers.aspx
And here is my thread on 3 repeaters I found - https://www.cointalk.com/threads/repeater-note-why-only-20-00s.294113/