Anarcho-capitalism on a global scale

I’m not an anarcho-capitalist, but I’d like to understand more about this philosophy. I’m curious what the best case scenario for this system would look like on a global scale. Imagine you were able to convince everyone that this is the best system, and we all agreed to implement it globally. Would no governments exist anywhere? Would there still be nations or borders? How would currency work? And finally, would the entire world have both free trade and free movement of individuals?