How to get field settings

Hi Long,
Yes, I did use $field_id. It seems none of the helper functions work. I tried a few other with no success. The fields are visible in the Post. I can change the values.

Here is just part of the Metabox.

function.php

add_filter( 'rwmb_meta_boxes', 'prefix_register_meta_boxes');
function prefix_register_meta_boxes($meta_boxes) {
    if (!class_exists('RW_Meta_Box')) {
        return;
    }
    /*=================================================
    * Properties Custom Type Metabox
    ===================================================*/
    $meta_boxes[] = array(
        'id' => 'property-meta-box',
        'title' => esc_html__( 'Property', 'textdomain' ),
        'pages' => array('property'),
        'tabs' => array(
            'property_location' => array(
                'label' => esc_html__('Location', 'textdomain'),
                'icon' => 'dashicons-location',
            ),
        ),
        'tab_style' => 'left',            
        'fields' => array(
            array (
                'id' => 'country',
                'name' => esc_html__( 'Country', 'textdomain' ),
                'type' => 'select',
                'placeholder' => esc_html__( 'Select an Item', 'textdomain' ),
                'options' => array(
                    1 => esc_html__( 'Canada', 'textdomain' ),
                    2 => esc_html__( 'United States', 'textdomain' ),
                ),
                'tab' => 'property_location',
                'columns' => 12,
            ),
),
);
return $meta_boxes;
}

$field = rwmb_get_field_settings('country');

I have front-end React app. I am using WordPress as headless CMS. The post doesn't exists yet. Hence I do not have post_id to pass it to the function. The idea is when a user opens form to create a new post, one of the fields is the Country select field. I was hoping to get options for this front-end field by fetching options from the custom Country back-end field. It is not a direct access. My app fires REST request to the custom endpoint. The custom endpoint function uses rwmb_get_field_seetings to get options and send it back to the from-end app. Is it even possible with Metabox? It did work with ACF.

Thanks.

Thank you Long. That should work.