Yes, you have, but there are still some there.
You still have a single quote without it's corresponding part here

@files = glob ('/export/home/date_file*);
               ^                       ^<-- not there
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Then instead of these
 $counts[$i] ...
$files[$i]..
$counts[$i]++..
you are writing  @counts[$i] ...
@files[$i]..
@counts[$i]++.. Which in this case is not correct.

If I may give you a head up ( it might not be the best suited for you but it might point you in a right direction ).
I have a few text file in a directory, and am reading each file to see how many times some certain words were used like this:

use warnings;
use strict;
use Data::Dumper;

my %type;
@type{qw(is a an at)} = (0) x 4;

for my $file ( glob "*.txt" ) {
    open my $fh, '<', $file or die $!;
    while (<$fh>) {
        for (split) {
            $type{$_}++ if exists $type{$_};
        }
    }
}

print Dumper \%type;

my $total = 0;

$total += $type{$_} for keys %type;
print $total, $/;
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