Shipping method and shipping service from a placed order
Since shipping_method is an entity reference field, you can call $order-&gt;shipments-&gt;entity-&gt;shipping_method-&gt;entity, to load the shipping method entity.

The shipping service is not an entity, but just a text field, so you can get the value by using $order-&gt;shipments-&gt;entity-&gt;shipping_service-&gt;value.

Hope it helps!