use Spreadsheet::ParseXLSX;

my $parser = Spreadsheet::ParseXLSX->new();
my $workbook = $parser->parse('file.xlsx');

if ( !defined $workbook ) {
    die $parser->error(), ".\n";
}

for my $worksheet ( $workbook->worksheets() ) {
    my ( $row_min, $row_max ) = $worksheet->row_range();
    my ( $col_min, $col_max ) = $worksheet->col_range();

    for my $row ( $row_min .. $row_max ) {
        for my $col ( $col_min .. $col_max ) {
            my $cell = $worksheet->get_cell( $row, $col );
            next unless $cell;
            print "Row, Col = ($row, $col)\n";
            print "Value = ", $cell->value(), "\n";
            print "Unformatted = ", $cell->unformatted(), "\n\n";
        }
    }
}