Average semi-professional game ends something like 6-3.
Average kids on the backyard soccer game ends 10-5 or something like that :)
Compared to "real" players kids suck as goalkeepers but so what? They are still having fun. The score doesn't matter that much at that level anyway.
Kids also usually play on smaller fields with smaller goals but it's not mainly because of scoring chance - it's because schools don't have the space and kids don't have the stamina to run for 90 minutes on a full sized football pitch.
I don't think anybody minds weird scores in lower level games.