Bash Script Permission denied & Bad Interpreter

You have a space instead of a forward slash here:

#! /bin bash

Should be:

#! /bin/bash

or simply

#!/bin/bash

(the first space is optional).  The shebang (#!) should be followed by the path to an executable, which may be followed by one argument, e.g.,

#!/usr/bin/env sh

In this case /usr/bin/env is the executable; see man env for details.

Just /bin refers to a directory.

It is worth noting that if the mountpoint on which your script resides has the 'noexec' attribute, then you can shebang all you want and it still won't work, but invoking the interpreter with the script as an argument will (so long as that in turn doesn't try to run another script on a noexec mount).