Hi, and thank you for your interest!
Orders is being translated using Weblate, a web tool designed to ease translating for both developers and translators.
Translation project for Orders currently contains 274 strings for translation and is being translated into 2 languages. Overall, these translations are 49.8% complete.
If you would like to contribute to translation of Orders, you need to register on this server.
Once you have activated your account just proceed to the translation section.