How to pass the select value?

Hi,
The search form can be considered correct, the way you make the search page is much more important, you can start learning about search pages here.
Regards

Thanks for the quick response appreciated. Can you point me other detailed references how to work around with the search page that address to my questions above?

You can start here :
https://codex.www.ads-software.com/Creating_a_Search_Page

Now I have my query below from my searchform.php and I get a blank result.

[ Moderator Note: Please post code or markup snippets between backticks or use the code button. ]

global $wpdb;

$s=(isset($_GET['s']));

$query = mysql_query('SELECT * FROM usermeta WHERE $wpdb->description = $s');

while($row = mysql_fetch_array($query)){
      echo $row[0] . "";
}

I see you don’t use wordpress functions to achieve the results of your search, you’ll have to learn some of the wordpress functions in order to create good code. Hope I won’t be understood wrong, you can achieve this with php and mysql only also but this is not the best practice withing wordpress;
Start learning about query_posts here:
https://codex.www.ads-software.com/Function_Reference/query_posts
and get_posts here:
https://codex.www.ads-software.com/Template_Tags/get_posts
And you can also read about the class wp_query (this can be too much for the start but the first 2 are accessible ):
https://codex.www.ads-software.com/Class_Reference/WP_Query

Thanks man, partially I got it working the search query. It retrieve now to the db and display results however I need to refine it further. The query displays all the names of the “doctor”. How could I extract the input string so that specific names only will appear in the results.

[ Moderator Note: Please post code or markup snippets between backticks or use the code button. It makes the code much easier to read and follow. ]

<?php
	global $wpdb;
	$metavalue = $_GET['s'];
	$selectvalue = $_GET['select_pros'];

	if ($selectvalue == 'doctor') {

		//Query All Description with Doctor
		$att_qry = "SELECT *
			FROM $wpdb->usermeta
			WHERE meta_key='description'
			AND meta_value='doctor'
			LIKE meta_value='$metavalue%'
			";

		$att_qry_results = $wpdb->get_results($att_qry);
		  foreach ($att_qry_results as $att_qry_result) {

			//Query User Information
			$userinfo=get_userdata( $att_qry_result->user_id );

			//Display Results
			echo '
<li>' . $userinfo->first_name . ' ' . $userinfo->last_name . '</li>
';

			}
	}

Working now:

$query = “SELECT user_id FROM $wpdb->usermeta
WHERE (meta_value LIKE ‘%%$metavalue%%’)
AND (meta_key = ‘first_name’)
AND user_id IN (SELECT user_id FROM $wpdb->usermeta WHERE (meta_value= ‘doctor’) AND (meta_key = ‘description’))”;

I found the post in this URL:https://wordpress.stackexchange.com/questions/28589/search-users-base-on-meta-value-meta-key