Gets back up that running score's kept (7)
I believe the answer is:
recoups
'gets back' is the definition.
(I've seen this in another clue)
'up that running score's kept' is the wordplay.
'that running' indicates an anagram.
'kept' means one lot of letters goes inside another.
'score' anagrammed gives 'recos'.
'up' placed within 'recos' is 'RECOUPS'.
(Other definitions for recoups that I've seen before include "gets back" , "Regains" .)