Make sure the driver hasn't dropped it off the end of the truck, and check for hair line cracks where the tank is molded to the lower part of the bowl.
They can bounce a lot during shipping. I gave up shipping years ago because of porcelain damage. I was spending too much time arranging for replacements.
Any toilet needs a standard kit for installing.
My kit is two wax rings, a 16" stainless supply for the Ultramax II, though a 12" may work too. New closet bolts and nuts, and you may need shims depending on the floor. I use plastic "Shim-It" shims found in the door department.
Unless your closet flange was installed on the finished flooring, you will need two wax rings.
The wax goes on the floor, and then the bowl is walked over and set "down" on the wax.