Scout needs surgery

My cat, Scout, has cancer and needs to have surgery to have the mass removed. She is 13 years old, almost 14, and I've had her since she was 1.5 years. The mass is on her leg, and was discovered when it ruptured. It's now an open wound that won't heal unless the mass is removed, which is why I'm moving forward with surgery. I appreciate any help I can get with covering the cost of this procedure.