Welcome to the forum.
I think on the whole, only a handful of members have even looked at the brakes. With the drive motor's regenerative braking, many of our pads would test as like-new even after 30,000-40,000 miles.
That said, I don't know what size the bleeder screw is, nor do I think messing with the brake fluid would be necessary more than once in the car's life if at all. Maybe someone with more in-depth knowledge would know.