my @array_data;

##</code><code>##

 
foreach my $hash (@array_data) {
    $logger->log( "HASH NOW: =====>  ". Dumper($hash));
  }

##</code><code>##

 
HASH NOW: =====> $VAR1 = {
          'Name' => 'First Segment',
          'Balance' => '183.57',
          'days' => 0,
          'First Date' => '12/02/2020',
          'payment' => 0,
          'Activity Date' => '07/05/2020',
         'Total Commission' => 0,
        };

HASH NOW: =====> $VAR1 = {
          'Name' => 'Discontinue Segment',
          'Balance' => '67.14',
          'days' => 3,
          'First Date' => '17/02/2020',
          'payment' => 0,
          'Activity Date' => '27/03/2020',
         'Total Commission' => 0.12,
        };

HASH NOW: =====> $VAR1 = {
          'Name' => 'Last Segment',
          'Balance' => '12.56',
          'days' => 7,
          'First Date' => '19/03/2020',
          'payment' => 0,
          'Activity Date' => '21/04/2020',
         'Total Commission' => 0,
        };

##</code><code>##

 
my $activity_date = $hash->{'Activity Date'};

print “Activity date:  $activity_date”;

##</code><code>##

my $max_date = 0;
$_ > $max_date and $max_date = $_ for values @array_data;