Numbers around end of score (for bigger numbers under score) (5)
I believe the answer is:
teens
'score' is the definition.
(thesaurus)
'numbers around end of score' is the wordplay.
'numbers' becomes 'tens' (ten is a kind of number).
'around' means one lot of letters goes inside another.
'end of' suggests the final letters.
The last letter of 'score' is 'e'.
'tens' enclosing 'e' is 'TEENS'.
'for bigger numbers under' is the link.
This may not be correct. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for teens that I've seen before include "The years 13 to 19" , "children" , "Adolescent years" , "Between 12 and 20" , "seven-year period" .)