Check that the Visa gift card is activated and has enough balance
Add the Visa gift card to your Amazon account as a payment method
Go to Amazon and sign in
Open Your Account
Select Your Payments
Choose Add a payment method
Enter the Visa gift card number, expiration date, and security code
Save the card
Add items to your cart
Proceed to checkout
Select the Visa gift card as the payment method
If the gift card balance is not enough, add another payment method for the remaining amount
Complete the order