Do box turtles and tortoises get along good?

No. Depending on the size of the snake, it may eat the turtle, and depending on the species of the turtle, it might eat the snake. It's not recommended that you house different types of animals in the same enclosure because they each have special needs, which could harm the other one. But if you have a small, non-venomous snake, and a medium sized non-carnivorous turtle, then they more than likely would not kill each other.