The NBA use dedicated character generator (CGen) units to generate the graphics and the scoring that pretty much automates the process with minimal operator input.
One example below, sports related from about 00:50 in the video:
Unless someone like @Elusien can come up with a clever html/css/js method, can’t think of any other way to do it in SC.
EDIT:
You could also make a “template” graphic for the background with the club logos and names then just update the score on a different track.
So video on V1, background on V2 and score on V3.
You can even make the background fancier with drop shadow, colour wash and so on.
