Reports - Date Pending Range
Date Pending Range is a special column used as a filter to get a list of cases that had the disposition of Pending during the filter date(s).
Add Case Data > Case Pending Date Range > Date Pending Range to your report and then filter on it.
If you need to set the Aggregate option on a Date Pending Range column, you must use Count. You typically want to hide the column because a number in that column will confuse people. The filter will still work as expected.