The Score value is used to work with scoring models in your Events.
You will have to specify three parameters in order for the value to work. Double click on the building block after you have dropped it in the Event data area to select enter the required information.
First parameter is the Counter name. This is the name that is used if you would like to fetch this information with the same building block later on.
The Score value is the score that will be added to the counter.
Specifying "write" as Type will add the score to any previously saved score for the counter and return the new score. You can also use "read" to fetch previously saved score.
The Type "reset" will set the score back to 0 and return the new score.
Note that this value is saved individually for each visitor.