What is the Walmart first time buy coupon code for treewood Card Holders?

I think you might mean the Capital One Walmart card. I have not heard of a Treewood card. There isn't a coupon code you type in for the Walmart card. When you are approved, they give you a special offer. It is for your first purchase with the card. It's usually a statement credit, like getting money back. You should check the official Walmart website to see the deal they have right now. It can change sometimes.