How Many Rows om Int and Big Int
Not sure I understand specifically what your question is or what exactly you're trying to do, but take a look at this BOL reference on int, bigint, smallint, and tinyint.

int

Size: 4 bytes
Min: -2,147,483,648
Max: 2,147,483,647

bigint

Size: 8 bytes
Min: -9,223,372,036,854,775,808
Max: 9,223,372,036,854,775,807

If you're asking about what are the upper limits of a sequential number (for instance, an IDENTITY column) then the max rows will be the Max values shown above, provided an initial value of 1.