how can create a site like another site?

You copy their html and javascript, but that's probably illegal. And if they generate that using php or so, it's quite impossible. And, of course, it might be dependent on a database you don't have access to.

So the simple answer is: hire a web developer, tell him what exactly to make for you and ask how much it will cost. Or do it yourself.
That's the way websites are built.

You can copy the code by inspecting the source file of that website.