Think of a number one’s going to score (7)
I believe the answer is:
compose
'think' is the definition.
(I know that compose is a more specific form of the action plan)
'a number one's going to score' is the wordplay.
I cannot really see how this works, but
'number' could be 'm' (M is an example) and 'm' is located in the answer.
'one's' could be 'os' (I've seen this in other clues) and 'os' is found in the answer.
The remaining letters 'cope' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
'of' acts as a link.
Can you help me to learn more?
(Other definitions for compose that I've seen before include "Create music" , "TRITE/WRITE" , "Produce" , "Make (music)" , "18 [GET READY]" .)