perl example not runiing

now is ee below error with print


sh-4.4$ vi hi.pl                                                                                                                                                                            
sh-4.4$ pwd                                                                                                                                                                                  
/home/cg/root                                                                                                                                                                                
sh-4.4$ /home/cg/root/hi.pl                                                                                                                                                                  
sh: /home/cg/root/hi.pl: Permission denied                                                                                                                                                  
sh-4.4$ chmod 700 hi.pl                                                                                                                                                                      
sh-4.4$ /home/cg/root/hi.pl                                                                                                                                                                  
/home/cg/root/hi.pl: line 1: print: command not found

i have below content in file just one line

print "hii";

Add the following as the first line in hi,pl
#!/usr/bin/perl

to make hi.pl look like (vi hi.pl

#!/usr/bin/perl
print "hi\n";

Select allOpen in new window

now run it, ./hi.pl
and you should see
hi
as the output.

now i see output

sh-4.4$ vi hi.pl                                                                                                                                                                            
sh-4.4$ ./hi.pl                                                                                                                                                                              
hish-4.4$  

what is meaning of below line
#!/usr/bin/perl

my perl script not at above location but at brlow location

sh-4.4$ pwd                                                                                                                                                                                  
/home/cg/root

please advise

Refereñce your Windows example
Your script, hi.pl is in the location reflected by pwd, the interpreter, perl is located in /usr/bin/perl
The first line tells the shell (environment in your case it is bash) where the interpreter that will process the script is.
Run the command,
which perl
This will tell your the command for perl is.

sh-4.4$ which perl                                                                                                                                                                          
/usr/bin/perl  
is above is path where perl library is inatalled?
do we need to refer that in everu perl script i write at top?

who installed there tutoralpoint guys?
https://www.tutorialspoint.com/unix_terminal_online.php

i just instaled on windows laptop only

Yes, unix, Linux scripts have to include the interpreter to be used to process the script as the first line
Note # means it is a comment
!/usr/bin/perl means use this executable.
At times shell script using sh, bash, ksh, zsh tcsh might be processed by the shell in which the person is
I.e. While first line says /bin/sh bash as the environment might process the script.
There are times where a script should be processed in a specific way, and to make sure one is directed to explicitly run
<shell> shell_script
Similar to the perl hi.pl you ran under Windows and can run under UNIX/Linux.