Is it possible to configure a property value as Popover in Constellation View?
In constellation, do not try to configure a normal property to behave like a popover through standard view settings, because Pega’s documented field options focus on helper text for simple hover guidance, while custom display behavior is handled through Constellation DX components. Use one custom Constellation DX field or widget and render the property value inside that component as a popover. This is the clear supported approach when you need interactive UI behavior beyond the standard field presentation in a Constellation view.
Clearer Forms, Happier Users: Out-of-the-Box Ways to Add Context in Constellation has a full write up on contextual information you an give to users (Infinity ‘25)
Great link shared by Marc. Use DX Component as last option when evaluating ootb solutions in a first place.