Mark, get the point! (5)
I believe the answer is:
score
This clue is a double definition.
'mark' is the first definition.
(I know that mark can be written as score)
'get the point' is the second definition.
(I've seen this in another clue)
(Other definitions for score that I've seen before include "Keep count" , "Tally in a game" , "Music from film" , "Number of runs" , "Points in a match" .)