There is not option for this built into acf.
You would need to create your own fields and then create an acf/save_post filter to update the post status and set the password.
add_filter('acf/save_post', 'set_password_from_acf', 20);
function set_password_from_acf($post_id) {
$post = get_post($post_id);
$post->post_password = get_field('pasword_field', $post_id);
remove_filter('acf/save_post', 'set_password_from_acf', 20);
wp_update_post($post);
add_filter('acf/save_post', 'set_password_from_acf', 20);
}