How to get the custom field value at thank you page

How to get the custom field value at thank you page

I adda ed the below code to function.php page and it shows the select box
at checkout page fine. But how can i get the value of selected item at the
thank you page.
add_filter( 'woocommerce_checkout_fields' ,
'custom_override_checkout_fields' );
function custom_override_checkout_fields( $fields ) {
$fields['billing']['point_side'] = array(
'label' => __('<strong>Select Where Your Points Should Go</strong>',
'woocommerce'),
'placeholder' => _x('custom_field', 'placeholder',
'woocommerce'),
'required' => true,
'clear' => false,
'type' => 'select',
'class' => array('form-row-wide'),
'options' => array(
'default1' => __('Defult1', 'woocommerce' ),
'ls' => __('Left Side', 'woocommerce' ),
'rs' => __('Right Side', 'woocommerce' )
)
);
return $fields;
}
Any helps appreciated.