Login to your American Express account at Amex Offers. https://www.amexoffers.com/ If eligible, an offer for Peacock: Monthly spend offer: Spend $4.99, get $4.99 back for up to 3 months will be listed under the Amex Offers & Benefits section. Click Add to Card. Visit www.peacockTV.com and sign up for a plan priced at $4.99 or more.