How to create a vbscript file?

First Method :

Start - Computer - Organize - Folder and search options - View - untick "Hide extensions for the known file types" - OK

Then you can see the format of the files, for example: New Text Document.txt, Doc1.docx and  IMAG0019.jpg

So you can know the format is txt or docx or mp3 or jpg or..........

And you can change the format

Then :

create a  "Text Document" 
then rename and just need to change the "txt" into "vbs"

Done :)

Second Method :

create a "Text Document"

then open it

click File - Save As...

then after the file name add ".vbs"  , for example: New Text Document.vbs

then click Save

Done :)