Hi and welcome to the Julia forum.
From just a screenshot it is complicated to provide an exact help. You seem to be on Windows (indicated by the C:\\). You then have to either run Julia in the right folder to use ; (switches to shell mode in the REPL) to cd to your folder.
Alternatively as gvdr wrote, you could include the file with its full folder.
In general, we can probably help a bit more, if you could provide a few more details, see also this introduction here Please read: make it easier to help you.