To activate BET.plus/activate, you will need to have a BET+ subscription. Once you have a subscription, you can follow these steps to activate your account:
1. Go to BET.plus/activate on your device.
2. Enter the activation code that is displayed on your device.
3. Click on the "Continue" button.
4. You will be prompted to sign in to your BET+ account or create a new account.
5. Once you have signed in, your account will be activated and you will be able to start watching BET+ content.