You would create a DashBoard Custom Panel that keeps track of the score in a parameter.
You can then enable the "XPression DashBoard Linq Port" to stream the value to XPression's DataLinq software.

Once the panel is set up to Stream, you can add a new DataLinq source in the DataLinq server. Select DashBoard DataLinq as the source:

Enter the IP address of the DashBoard computer and the streaming port you specified.
James
#DashBoard