Help my cat Po treat his severe gingivitis

Hi. I adopted my cat Po from a shelter that saves wandering homeless cats left from the hurricane in Puerto Rico. A little background info: Po is 2 years old and loves humans and other animals. He is the sweetest boy and befriends everyone he meets. I have a part-time job and am doing everything I can to raise enough money but I'm also a full-time undergrad student so it's hard. Po has severe gingivitis and needs money for X-rays and multiple teeth extractions. I can't brush his teeth anymore because it's too painful and his gums start to bleed. His gums are severely red and inflamed to the point where he avoids eating even soft wet food. Please help my baby boy Po get treatment and live a happy and thriving life.♥️ Any amount helps, thank you.