Dream Dictionary Unlimited | Margaret Hamilton
A dream featuring anything to do with keeping a score is a warning to guard against activating the latent jealousy around you.
The Complete Guide to Interpreting Your Dreams | Stearn Robinson - Tom Corbett
It is related to how well you have learned lessons from your experiences, and how well you are progressing through each stage of your life.
If you saw numbers on the scoreboard, you may also want to look up those numbers in this dream dictionary, for additional symbolism.... scoreboard dream meaning