Scoreboard

google

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late Old English scoru ‘set of twenty’, from Old Norse skor ‘notch, tally, twenty’, of Germanic origin; related to shear. The verb (late Middle English) is from Old Norse skora ‘make an incision’.

wiktionary

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score +‎  board

etymonline

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scoreboard (n.)

also score-board, 1826, "blackboard in a tavern on which debts are chalked," from score (n.) + board (n.1). By 1884 as a display of the tally on a sports contest or game.