IPhone 5 replacement process and outcome?

I wanna replace my iPhone 5 because its cracked and a lot of scratches and I do have AppleCare.
-I know it's $49 but about an estimate how much am I going to have to pay in total
-will I get my iphone the same day or will I have to wait
-can I pay cash after the process or will it go toward my bill for sprint

Taxes may apply to the service fee, but that is about it.

The time required for servicing depends on where you live, the availability of an Apple service center nearby, and parts availability. Without speaking to Apple, there's no way to get a specific timeframe for servicing.

Apple Care is separate from Sprint, and is billed as such.