Cool score, result secured (6)
I believe the answer is:
trendy
'cool' is the definition.
(both can mean fashionable)
'score result secured' is the wordplay.
'score' becomes 'try'.
'result' becomes 'end' (I've seen this in another clue).
'secured' indicates putting letters inside.
'try' enclosing 'end' is 'TRENDY'.
(Other definitions for trendy that I've seen before include "Modish" , "Fashionable, in style" , "In accordance with the latest fad" , "With it, a la mode" , "all the rage" .)