[Jstylezzz]

It means there are no public functions in your script
you should not open the .amx, but the .pwn

Let me explain, the .amx, is for the server to read instructions, it's computer language.
The .pwn, is language that we understand, and what we can program.
When you compile the .pwn, it will be translated to computer language, .amx.

Hope i helped