What's the score? (4)
'score?' is the definition.
(score is a kind of debt)
'what's the' is the wordplay.
'what's' becomes 'deb' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'the' becomes 't' (the is pronounced as a 't' sound in some dialects).
'deb'+'t'='DEBT'
Can you help me to learn more?
(Other definitions for debt that I've seen before include "Amount owed" , "Money owed or due" , "Amount owing" , "Commitment" , "Financial problem?" .)
'what's the score?' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for twenty that I've seen before include "Figure" , "with two crosses" , "No. between 5 and 1 on dartboard" , "Score, XX" , "made by Q on a light blue square" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">what's the score?</span>' is the definition.<br/ ><span class="explanation-format__explanation">(score is a kind of music)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for music that I've seen before include "Identical" , "orchestral work" , "Pleasing sound" , "Harmonious sounds" , "'If ... be the food of love, play on'(Twelfth Night)" .)