What button do i push on my X1 remote to get the Prime Video menu?

You should just be able to hit the back key to back up to the main screen. Then hit up-arrow to get to the top row. If you go too far and get the prompt if you want to exit, just say no and you should be back on the home screen. There is no key to directly jump to the home screen. Unlike some other apps, there isn't the left-side menu where you can go to and then choose the home icon.

@Phish-Finder Works here. Are you using the Left arrow next to voice button? I have seen it referred to as last Button.  Then arrow up to menu. 

@CCAndrew XR15. The left arrow button is to the left of the voice command unless @Phish-Finder  has an older one. 

@Phish-Finder, I am so very sorry to hear that you are having so many issues with the X1 remote. I would love to assist you with getting to the bottom of the remote control issues.  I very much appreciate your patience and greatly apologize for the delay in our response.If you would prefer a remote can always be picked up at any time through any of our service centers, you can find a store near you and hours our experts in person are available through this link, https://comca.st/3q3VXDk. Should we troubleshoot the remote and find that it needs to be replaced we can always ship you one as well. Just reach out through private message with your first and last name, name on the account if different, service address and account number? If you’re having trouble locating this information, you can also reference our world-class MyAccount app to view all of your account details by the simple touch of your fingertips! Please follow the process here to learn how to obtain that information: https://comca.st/3siry60;

For Prime, there is a menu along the top row. Once you are in menus (not in a video), hit the up arrow until you see the text. and one of the texts turn yellow. You should then be able to move left/right to choose home or similar.