A numbered account? (5)

I believe the answer is:

score

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'account?' is the definition.
('score' can be a synonym of 'account')

I don't understand how the remainder of the clue works.

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(Other definitions for score that I've seen before include "Chalk up - twenty" , "Points in a match" , "Cut - and run!" , "Deeply scratch" , "Put ball in the net" .)

I've seen this clue in the Evening Standard.

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