This is a very simple scorecard that I used for my Middle School ELA students - although it can be altered for any grade/subject.
This was used to do a "mini debate" during our Black History Month discussion. The students really like to use it to "judge" their classmates and it is very simple for them to use:
It uses a 1-5 pt scale for two different teams, up to 8 team members.
After all the scores have been entered, you add them up and announce the winner! Very simple.