In normal match point scoring, you get 2 points for each score you are better than and 1 point for each score the same.  So how do we end up with decimal points?

On July 26th, due to lack of time, the competition ended with 1 round to play to complete the movement.  It was a share and relay movement, so this meant that some boards had been played more times than others.  Under normal scoring, this means that a complete top on one of these boards would be worth more than a complete top on other boards.  This is considered to be unfair.

Mathematically the scores can be adjusted so that each board carries the same weight.  There are several ways of doing this, but the currently preferred method is by Neuberg scoring.  By hand this would take too long, but modern scoring programmes make it effectively instantaneous.  The Neuberg scoring gives the decimal points.  If you want more info, click the link to go to an EBU web page about this (it's a pdf file).

The August 9th score also has decimal point scores in the Match Points.  This is because 1 pair took an average on one board.  The Neuberg adjustment for this gives decimal points in the scores for the other players on that board.