Here’s the best guide online in my opinion.

take a sheet of paper 11×13 draw 10 squares across top and ten squares down all the way across makes up to 100 squares, take 10 red cards ace thru 10, and ten blk cards ace thru 10, these are for the ending numbers for score, shuffle the ten red cards and lable across top of squares pick one at atime example first card 4, 7 , 8, 3, 2, ace, ect ten is zero, same for blk cards down the other row, put one team on top of row, and the other team down the other row, then choose how much per square, and you can have one winner or a winner from each quarter
hope this helps
and dont forget to write final score on 4th quarter in case of overtime , theres always a fuss if final score isnt written cause if it goes to overtime and you didnt state final score there could be 2 numbers at end of 4th

10 squares across and 10 down