As of version 8.4.7811, Quickmap supports the use of shadow fonts in labels on the map. Quickmap 8.4.7811 was officially released on 01/06/21 (but was available ahead of that time from the Software Updates… menu in Quickmap).
To use shadow fonts, select the label you want to change using the info tool in Quickmap, then select Tools -> Symbology -> Edit from the menu, or press F9. When the symbology editor form displays, click on the Edit Label button. This will display the Label Font Editor form, where the shadow font can be changed.