Laid before heart, spades accumulate points? (5)
I believe the answer is:
score
'accumulate points?' is the definition.
'laid before heart spades' is the wordplay.
'laid before' is a charade indicator (letters next to each other).
'heart' becomes 'core' (synonyms).
'spades' becomes 's' (abbreviation in card games).
'core' put after 's' is 'SCORE'.
(Other definitions for score that I've seen before include "musical work" , "Tally in a game" , "Musical composition in written form" , "Hit - music" , "Deeply scratch" .)