Build a Plugin For WordPress

Hi sir, I am working on e commerce website and our aim is different from other e commerce sites, we are targeting customers according to pincode of area to boost our delivery, and delivery is done in nearby homes of colony so we don't hire a third party courier service ( there is need as we have to serve in our own colony) but here is hurdle while delivering in searching homes, so I want to add Google Maps Directions API , in my website ( want to do delivery as same as # swiggy do) , means get direction of customers address and since we delivering in bulk, so we also need that something can arrange our orders according to nearest distance and make a artificial route for delivery, and this should be only for our delivery persons. So that's my point, can do something, can you please help me in doing this, please?. And yup I am a neet aspirant (no interest in doctor?‍⚕)student and so, if you are going to charge something so please make it reasonable for me. Website is not operational yet, actually I am working to add at least those service which gona help me In initial days of my startup.