Please explain how to extrude a 2D curve from SVG Can a 2D shape that was created in Illustrator be extruded? The svg file imported successfully, but I have not been able to determine how to extrude the shape into a solid object. Does this require a special add-on?
You can use Solidify modifier.

Select imported object, go to Modifiers tab, select Solidify and change Thickness to desired value.