I got a stent install in biliary canal after gallbladder removal, I want to be asleep for my ERCP to remove it but it can take up 60 days. Dangerous?

Straightforward. Don't worry. While any procedure can have complications, this one is low risk (not zero...). I would be more worried about the reason the stent is there, and whether or not a stricture (narrowing from scar) will develop afterwards. You may want to ask that. I'm sure they will give you adequate sedation for the procedure. Hope this helps!