Help my kitty get surgery to remove kidney stones

Hello everyone, my name is Madison. I'm a 16-year-old girl in Texas. Just recently my cat started to fall ill. He couldn't eat, drink, or walk, and he could barely manage to sit up. We soon found out that Binx was in critical condition due to a blockage that released toxins, he now has kidney stones. Binx is the most lively cat I've ever met. Not only that, he's a life-saver. I suffer from PTSD due to childhood trauma and at my lowest point, I got Binx. He's saved me from suicide, panic attacks, and relapses with self-harm. He's been the light at the end of the tunnel for me. Not only that his best friend Dani, my other cat is the most skittish cat ever. Binx is her protector too, from flies, spiders, and ceiling fans. I don't have much money and I'm trying to work to help my mom make ends meet but the medical bills from the tests were 3,500 alone. Now he needs surgery to get the kidney stones removed. He's my best friend in the whole world and I don't think I could bear to lose him. He needs surgery ASAP. If you could donate anything to help us pay for his medical bills I would be eternally grateful. Please help my baby.