Hi Ole,
The quick summary is that you are going to:
-make a parameter in DashBoard that represents the score.(one for each team)
-This parameter will be DataLinq'd to XPression using the DataLinq server
-You can make buttons in the UI that changes the value of that score (increment/decrement/set to a specific value)
-All of these changes are live, so, if an XPression scene is on air that is DataLinq'd to these values those changes will appear instantly on-air.
I'd start first by reading the XPression DashBoard document it gives an outline of how to do most of this.
http://www.rossvideo.com/software/dashboard/Beta/DashBoard_Release_Notes%206%202013_05_27_T15_XPression_V5.pdf
When you want to create a button that modifies a parameters value, add a task to that button of type 'DataModification'.
If you have further questions after reading the documentation please let me know which sections to help you with.
Troy.
#DashBoard