American General Credit Card What Happens If You Cannot Pay The Entire Balance On Your American Green Card?

What happens if you cannot pay the entire balance on your American Green card? - american general credit card

I'm on the short $ 80 I will try to borrow from family members, but only if you can not borrow money, what if, for example, you will have $ 200 American Express Green Card and you can pay only $ 120? What are the penalties and interest, how? BTW, I can not able to pay over time, since none of my charges were over $ 200. Please enter only specifically for the American Green Card and Express credit cards are generally not answered. Thank you.