Record contribution to score (4)
I believe the answer is:
note
I believe this clue is a double definition.
'record' is the first definition.
(note can mean to record or notate)
'contribution to score' is the second definition.
(as in a musical score)
(Other definitions for note that I've seen before include "Musical tone" , "A, B or C, for example - short message" , "register" , "Observe in Eton" , "Short personal letter" .)