Hi, trying to use the Scrolled Text widget is the wrong choice. You want a Scrolled Pane. Additionally, you should use a hash, instead of the $scalar concantation to make your entry names. That way you can access them easily by frame number.

#!/usr/bin/perl
use warnings;
use strict;
use Tk;
use Tk::Pane;

my $mw =MainWindow-> new (-title => "Demo");
$mw->geometry('340x300');


my $frame_tl= $mw->Scrolled('Pane',
     -scrollbars => 'se',
)->pack(-expand => 1, -fill => 'both');

my %f;
   
for (1..13){

   $f{$_}{'frame'}= $frame_tl->Frame(-borderwidth =>2, -relief=> 'groo
+ve')
        ->pack(-side => 'top', -fill => 'x');
   $f{$_}{'label'} = $f{$_}{'frame'}->Label(-relief => 'groove',-text=
+>" $_ :" )
        ->pack(-side => 'left', -fill => 'y');
   $f{$_}{'entry'}= $f{$_}{'frame'}->Entry(-takefocus => 1,-width => 6
+0, -textvariable=>\$_)
       ->pack(-side => 'left', -fill => 'y');  
} 


MainLoop;
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