Find iTunes Movie Rental on iPhone, iPad, or iPod touch
Open iTunes Store app and search for movie rental.
Find iTunes Movie Rental on Mac or PC
Launch iTunes and sign into iTunes with the Apple ID that you used to rent iTunes movie.
Select Movies from the menu bar in the upper-left corner.
Click the Rented tab at the top of iTunes main window, then you will see the rented movies in your library.
Find iTunes Movie Rental on Apple TV
Open the iTunes Movies app on Apple TV, then swipe up the Apple TV remote and select Purchased. Select Rentals in the left sidebar, you will see the rented movies from there.
If the Apple ID associated with your Apple device doesn't have current rentals, you won't be able to see the Rentals section on your device.