First, please visit: destiny2.rockstarenergy.com
Next, you select Sign Up at the top left corner of the screen, which will prompt a "Getting Started" popup window, click "Log In or Sign Up with Bungie.net"
Now, pick any of the 3 platforms below to create your account. If you already have a game platform account, select and sign-in.
Then, sign-in if you have an existing game account. If not, create a new account and follow the registration prompts.
Lastly, validate your information to complete your new Rockstar (X) Destiny 2 registration by entering your First Name, Last Name, and Email Address, and agree to the official rules.
Now, check your email and confirm your account.
Congratulations, you're now registered and can begin entering can codes!