I would not use grep in this way.
Better would be to process the input lines one by one and push a result if there is one. The code my @lines=<QUEUES>; and the grep code are both "foreach loops". Only one loop over the input lines is needed. 
#!/usr/bin/perl
use strict;
use warnings;
use Data::Dumper;

my @queue;

while (<DATA>)
{
   push @queue,$1 if (/count=\s*(\d+)/ and $1 != 0);
}

print Dumper \@queue;

=prints:
$VAR1 = [
          '3079'
        ];
=cut

__DATA__
Host 'server02' connected
 ============================================================
 Hostname: 'server02'
   count=     0, delivering=     0, Queue=opr_action_launch_queue
   count=     0, delivering=     0, Queue=queue/alert_engine_notificat
+ion
   count=  3079, delivering=     0, Queue=or_event_queue
   count=     0, delivering=     0, Queue=recipient_notification
   count=     0, delivering=     0, Queue=queue/alert_engine_alert
   count=     0, delivering=     0, Queue=failed_recipient_notificatio
+n

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In reply to Re: Did not get the regex matched value in perl array variable by Marshall
in thread Did not get the regex matched value in perl array variable by sreek3502

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