While viewing a Table in Perspective's Report Viewer (upon clicking specific data in a row) I need to open a popup view passing in data that was selected in that row. How do I access the @text@ in the actual report to be able to pass that into a popup view?
You don't. Reports are not designed for interaction. They are intended for printing on known paper sizes. At best, you can inject URL links.
Consider just using a Perspective table for interactive content.