a rough estimate---A misprint with a mismatched serial number will probably be worth around $500 in uncirculated condition. Mismatched serial number errors on circulated issues can be bought for less than $200.
Very cool note. I've only seen two mismatched serial numbers on the newer colorized notes, and both of them were $20 notes. This is the first colorized $5 note with a mismatched serial number that I've ever seen. I have a mismatched $5 FRN but it's a series 1974. Unfold any folded corners and get it into a quality currency sleeve. I'd probably even take it one step further and submit it for grading. Very cool note !