Scratch all points earned (5)
I believe the answer is:
score
I believe this clue is a double definition.
'scratch' is the first definition.
(I know that score is a type of scratch)
'all points earned' is the second definition.
(points in a game)
(Other definitions for score that I've seen before include "Reckoning" , "Put ball in the net" , "Tally in a game" , "Tally; group of twenty" , "record" .)