Here are if you had all the X on.
10 Stud 2x 4x 6x 8x 10x xDouble Score Zone=76,800
100 Stud 2x 4x 6x 8x 10x xDouble Score Zone=768,000
1000 Stud 2x 4x 6x 8x 10x xDouble Score Zone=7,680,000
That is a lot of studs. And that is only 1 stud each.
I haven't got all the X yet. I have only got 2x and I have about 3,000,000 studs so I am about half way there to get 4x.
If anyone needs any help then just ask me.