Green’s Dictionary of Slang

an excl. of satisfaction, pleasure.

1997–2000		College Sl. Research Project (Cal. State Poly. Uni., Pomona) 🌐 Score (interjection) An expression to indicate something good.
1997–2002		Hope College ‘Dict. of New Terms’ 🌐 score An expression used to describe something desirable; similar to cool or awesome. ‘My family is going to Hawaii for Spring Break, score!’.
2012		J. Fagan Panopticon (2013) 23: The staff must be in a metting. Score!