We know that Scott has put 6 rows with 5 stickers each.
The total number of stickers available with Scott = 5*6 = 30 stickers
These 30 stickers are now placed in 5 rows with equal number of stickers in each row.
Number of stickers in each row= Total number of stickers available/number of rows
Number of stickers in each row = 30/5 = 6 stickers
Number of stickers in each row now would be = 6 stickers