Updated info...
The file is a MOV. If when the project is loaded the file appears on the sequence timeline, remove it.
In the bin (top-left), right-click it, choose VIDEO EFFECTS and remove the rotation. Right-click and CHANGE ASPECT RATIO to Letterbox/9:16.
It then should display vertically and can be dropped onto the timelime, where it should also display vertically.
Export at Letterbox/9:16. Or choose the YouTube custom 9:16 profile... 
Mediainfo lists the export as format profile 4. (Same as original.)
It fills the vertical frame, but is compressed horizontally owing to the original aspect ratio. If you want it to be horizontal, apply ROTATION. But that won't fill the frame. ZOOM can, but content is lost.