You should find a zip file containing a Nearmap image and .jgw file with similar filenames. Go to the location to which you downloaded the Nearmap image export.
In addition to this document, you can watch our video: These instructions assume that you have already followed the process described in our documentation on exporting imagery, and as a result have downloaded a Nearmap image with an accompanying. jgw georeferencing file if the file path is greater than 128 characters.