You can create two Parameters of the Integer Type,
in Tableau this data type is called a Number (Whole).
Then you can use the Parameters in a calculation like this:
[your_rank_calculation] >= [Lower Bound Parameter] AND
[your_rank_calculation] <= [Upper Bound Parameter]
Show both Parameters on a view,
and place the calc on a Filter shelf
(with the True value selected).
Hope it helps.