A:AnswerGood morning,
Yes it does have YouTube TV already installed which I personally use myself. It also has many other streaming apps already installed as well.
A:AnswerYou go to Samsung USA and you either sign in or sign up. Aftrr that you go to My Account & there is a Register product. You register with the serial number & it will automatically show your tv.
A:AnswerNo but you can just download the app as I did and saved money for the 1st 6 months dealing directly with HBO MAX rather then through my cable provider.