How to edit custom table data in frontend

Good day!
To edit the existing field, you need to put the values inside your input fields. You can do that in this way-

<tr>
     <td><label for="team_uniqueid">UniqueID:</label></td>
     <td><input type="text" name="team_uniqueid" id="team_uniqueid" value="<?php echo $team_uniqueid; ?>"/></td>
</tr>

I hope, this will help.