Unknown, but on my 2017, there is no fuse back there. I know that because I had all of it ripped limb-to-gut, installing a rear dashcam in the liftgate... It came out great, BTW.
There WAS however, a connector that is common to both tag lights and the racetrack behind the trim panel, so the trim will need to be removed to inspect it. There isn't much guesswork to it, as I recall, but getting to it was somewhat of a chore. Unless you're willing to remove the rear liftgate trim to get at it, I would make an appointment with the dealership.
But if you are willing to save some cash, while assuming a very minor risk of damaging a clip or two in the process, just view some of the tutorials on youtube and have at it..
You'll likely find that connector loose, or corroded The following video may give you an idea of the procedure of getting TO this connector;