it is simply the ending score
The serving teams score
In a normal volleyball game you have to score to 25 and be winning be at least 2 points.
The score in volleyball is always said with the team ahead, then the team behind and the name of the team ahead. Example: 23-10, Panthers
each serve has one point as in table tennis........
I have been playing volleyball for 6 years and the score has never started at 4