I have the profile on my computer but don't know what to do with it. Would anyone be able to help? I also cannot access the instructions on the website on how to do this so an explanation would be very helpful!
I strongly recommend you read the "watchOS beta Software Installation Guide" by Apple, available in the Dev Centre. It lists all the instructions on how to install watchOS 2 on your Apple Watch. Don't forget to register the UDID in your account, though!