How to pass user meta_key and meta_value (values as array)

Question

What you are doing is not a valid way of retrieving and checking serialize data from the WP. You may insert array as a user meta but this array behind the scenes is transformed to serialize string something the MySql can handle.

There are options for searching with the LIKE operator but I don’t endorse this use as it can lead to unexpected results.

$args = array(
'number'       => 1,
'count_total'  => false,
'fields'       => 'ID',

'meta_query' => array(
        array(
            'key' => 'user_biodata',
            'value' => 'yourValue',
            'compare' => 'LIKE',
        ),

    ),
);

$users = get_users($args);