Nicks a whole lot (6)

I believe the answer is:

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'lot' is the definition.
(thesaurus)

I can't explain the rest of the clue.

(Other definitions for scores that I've seen before include "Written forms of a musical composition" , "Puts ball in the net" , "Musical compositions in written form" , "Gains game points" , "Sets of twenty" .)

I've seen this clue in the Evening Standard.

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