add to functions.php , I managed to achieve fields from ACF in the response
add_filter('woocommerce_rest_prepare_product_object', 'include_acf_fields_in_api_response', 10, 3);
function include_acf_fields_in_api_response($response, $post, $request) {
$data = $response->get_data();
$acf_fields = get_fields($response->data['id']);
$data['acf'] = $acf_fields;
$response->set_data($data);
return $response;
}