the path is written in terminal/ command window right?

Yes.

" code " should I put those apostrophe?

No. The double-quotes (not apostrophes) are only needed on the command line for specifying source code for the  -e command-line switch. See perlrun. The command-line format is only my personal way of presenting example code. What is found inside the " code " double-quotes (but not the double-quotes themselves!) is the source code you can put into a regular Perl  .pl source code file to be run from the command line in the usual way (assuming Windows):
    c:\yourprompt>perl your-source-code-file.pl

Data::Dump::dd() is enough in the first line of the code?

This is what I would put on the first few lines of my source file:

use warnings;  # always
use strict;    # always

use Data::Dump qw(dd);  # if you want to use dd()

...  # the rest of your source code
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