Please help my Nugget

This morning my baby wasn’t acting right, I took him to the emergency vet. The outcome wasn’t quite what I was expecting.. he has a blocked bladder and his bladder was very hard and the bigger than the size of his head.
they have to keep him at least for tonight, which has already cost us [phone redacted]$.
He is in the stage of kidney failure.
he may have to have more surgery which we won’t find out about until the morning or here in a bit once he’s under anesthesia and the blood work comes back. Anything helps, purely and truly. Thank you very much for helping I really appreciate it Anyone who knows me, knows he is my baby. He’s the best cat in the world!