Points gained from scratch (5)

I believe the answer is:

score

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'scratch' is the definition.
(I know that score is a type of scratch)

I don't understand the remainder of the clue.

(Other definitions for score that I've seen before include "Gain a point (20 of them?)" , "Result" , "Tally; group of twenty" , "Nick; twenty" , "Chalk up - twenty" .)

I've seen this clue in The Globe and Mail.

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