$sql = "SELECT * FROM services ORDER BY groupname ASC;

//fetch your form like this:

<form>
    <table>
        <tr>
<?php while($row = $result->fetch_assc()) :?>
            <td><label><?= $row['groupname']; ?><input type="hidden" name="srvid[]" value="<?= $row['srvid']; ?>"></label>
            <td><textarea name="rate[]"></textarea></td>
<?php endwhile; ?>
        </tr>
    </table>
</form>

// get your record like this:

$sql = "SELECT * FROM reseller_service_rate as r LEFT JOIN services AS s ON r.srvid = s.srvid WHERE r.id = {$id}";

echo $row['id'] . ':' . $row['groupname'] . ':' . $row['rate'];