If you press the Chart button you will initially see how the scores distribute.

 

Here the top score is 4,506.7 that is scored by the very first text. The last text (number 8,846) scored zero points.

 

If you change the option to Histogram, you get this:

 

 

There are 100 bars. The leftmost bars show very few texts got very low scores, rising to a peak at 8% with those scoring about 360 which each have over 300 text files, and then the very few that scored very highly indeed at the right.