I know this might be an easy one, but I need to know how to have a field in my report/query not show data if the field has a value. It is a date field that when I have a date in the field I do not want it to show in my report.

Why not just remove the control that houses it? Because if it doesn't have a value then it won't have anything there and if it does, you don't want it, so just remove the text box from the report. It won't affect your data.