You can add an unlimited amount of videos to your queue!
The fastest way is to select and hold any title until a prompt appears with the option to Add to queue. Tap on Add to queue and the title will be added to the category labeled My Queue, which is above the Featured category.
Another way is to select a title and select Add to Queue, located at the bottom right corner under the image. Afterward, you can back out to the categories list, scroll up to My Queue, and you’ll see the movie/TV show you just selected in this list.