Where do pano’s get saved ?  Can not view like pictures and other videos in editor.

Whilst connected to your drone, press the little play button in the corner of the phone screen. Then search the gallery it brings up for the pano. It has a little globe in the corner of the thumbnail. Click it. Then it will say "Stitching pano images" give you the finished picture and you can save it to your phone.

On the SD card, they are saved in a pano folder which is visible from the file viewer. At least that's what happens on a Mavic Pro.