One female in two score, getting brace (7)
I believe the answer is:
fortify
'brace' is the definition.
(bracing oneself is fortifying oneself)
'one female in two score' is the wordplay.
'one' becomes 'I' (Roman numeral).
'female' becomes 'f' (common abbreviation).
'in' indicates putting letters inside.
'two score' becomes 'forty' (two lots of twenty).
'i'+'f'='if'
'if' put inside 'forty' is 'FORTIFY'.
'getting' is the link.
(Other definitions for fortify that I've seen before include "Increases strength" , "Support" , "Make stronger" , "Invigorate, encourage" , "Invigorate; strengthen" .)