No score (3)
I believe the answer is:
nil
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">no score</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for nil that I've seen before include "Nothing, zilch" , "duck" , "Latin zero" , "Nothing, zero" , "Nothing found in senility" .)