You can sign up for an Activision account from this link https://s.activision.com/activision/signup.
You can sign up with your email address or use your existing PlayStation, Xbox, BattleNet, or Steam account.
You can sign up for an Activision account from this link https://s.activision.com/activision/signup.
You can sign up with your email address or use your existing PlayStation, Xbox, BattleNet, or Steam account.