American Express cardholders get $20 off YouTube TV.

American Express is offering a $20 discount on YouTube TV for some cardholders, which is available to both new and existing subscribers. The offer gives cardholders a $20 discount on their service, both for those who are already subscribed to YouTube TV as well as those who are new to the service. The credit only kicks in three times, though, meaning this is a savings of $60 in total if you keep up your subscription for three months on the card.