If you data dump the objects you might be able to find the data. Try

use strict;
use warnings;
use Data::Dump 'pp';
use CAM::PDF;
 
my $pdf = CAM::PDF->new('file.pdf');
my @formfields = $pdf->getFormFieldList();
foreach (@formfields){
  my $obj = $pdf->getFormField($_);
  #pp $obj;
  printf "%s = %s\n",$_,$obj->{value}{value}{V}{value};
}
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