You do not need a link or code to watch the event! All you need to do is click on the "Log In" button located on your order confirmation email.
From there, you will log in using the email address and password you used to purchase your ticket.
Note: If you have not set up/finalized your account in that store yet, you will need to do so first.
After that, you will have access to the event. If you do not receive your order confirmation, be sure to check your spam folder. If you are still unable to locate it, you can typically access the event via the menu on the store.