Robocopy not working on Win10 machine

The syntax for Robocopy is:

robocopy <source> <destination> [<file>[ ...]] [<options>]

• Both <source> and <destination> must be directories
• Robocopy cannot copy to the same directory whilst changing the name
• To copy all files in a directory, leave the <file> argument empty, or pass *.*, remembering you have to pass the /e flag to copy all files in all subdirectories

If wanting to copy %UserProfile%\Desktop\first_batch.bat to C:\some_other_dir:

robocopy %UserProfile%\Desktop C:\some_other_dir first_batch.bat

To achieve what you're trying to do:

copy %UserProfile%\Desktop\first_batch.bat %UserProfile%\Desktop\simple_copy.bat