I ju at set up my entertainment pass but when I go on the app on my tv it's just got my movies how do I watch my box sets?
Are you using the nowtv App off a YouView box by any chance ?
If so, the YouView boxes nowtv App only currently supports on demand movies only.
NowTV have confirmed that sometime during 2019 nowtv entertainment, kids and sports will be added to the YouView boxes on the BT Platform (not sure about the TalkTalk YouView boxes mind).
Here's a link of supported nowtv devices.
If you are not using a YouView box, then post back your nowtv playback device on your TV and hopefully somebody will offer you some further assistance.