Full $cfg structure:
$VAR1 = [
          {
            'C:\wamp\www\password.ini' => {
                                       'password' => {
                                                       'password' => 'mypass'
                                                     }
                                     }
          }
        ];

Password: HASH(0x7f9a03843da8)

##</code><code>##

[password]
password=mypass
[other_section]
other_key=other_value

##</code><code>##

Full $cfg structure:
$VAR1 = [
          {
            './pm_config_any.ini' => {
                                       'other_section' => {
                                                            'other_key' => 'other_value'
                                                          },
                                       'password' => {
                                                       'password' => 'mypass'
                                                     }
                                     }
          }
        ];

##</code><code>##

say q{Password: }, $cfg->[0]{$pw_ini_file}{password}{password};

##</code><code>##

my $ini_password = $cfg->[0]{$pw_ini_file}{password}{password};
say $ini_password;