Currently you are able to watch "Harry Potter and the Goblet of Fire" streaming on iflix, HBO Go. It is also possible to buy "Harry Potter and the Goblet of Fire" on Apple TV, Google Play Movies as download or rent it on Apple TV, Google Play Movies online.
When Harry Potter's name emerges from the Goblet of Fire, he becomes a competitor in a grueling battle for glory among three wizarding schools—the Triwizard Tournament. But since Harry never submitted his name for the Tournament, who did? Now Harry must confront a deadly dragon, fierce water demons and an enchanted maze only to find himself in the cruel grasp of He Who Must Not Be Named.