If you have a cat and furniture, chances are good your at will scratch and wreck your expensive furniture. To protect your furniture, get rid of it and keep your cat. Failing that drastic measure, get scratching posts and put them around the house.
The more scratching posts available, the more likely the cat will scratch that instead of your furniture. Then be sure to praise your cat for using the scratching post instead of the furniture. Cats just want to wreck something so a scratching post will do, especially if you act like it’s valuable and important to you more than your furniture.