Tim, can you share any sample data (sanitized if necessary), or illustrate what you are trying to do with the Superstore data?
Make sure to tell us what version of Tableau you're working in, too.
The simple solution would be using relative date filtering.
Please post a sample workbook so as to give a concrete solution.
It would help to see a workbook in a twbx format - but in general you need to create a calculated field to give you the number of days = datediff('day',Orderdate,(you need a finish date - could be today or a parameter) ) then you can use the results of that calculation as a filter
Let me know if this helped
Since I can't see your workbook or data, here is an example of a calculation that will give you the number of days from a dimension and today's date. You should be able to modify to your needs.
DATEDIFF('day', [Order Date], TODAY())