my card that is used for current payment expires soon and i need to regester a new card/number for future payments
Depending on if you're prepaid or postpaid, you login to My Verizon and look for the link "Manage Auto Pay" or "Manage Payment Settings" to update your autopay method.
Happy Monday! Being on top of your account is crucial, especially if you are managing your bill. You can modify your payment method through your My Verizon:
App: https://www.verizon.com/support/knowledge-base-205735/
Website: https://www.verizon.com/support/knowledge-base-301813/
Hope this helped.
~Gilbert