At the moment, this is not possible with AppSheet. The platform does not yet provide constant background updates of GPS coords from the device. Coordinate capture is only possible through a function call (HERE() is the function) and this means user activity within the app is required to capture.
Additionally, I do not think there is a way to draw between two coords to properly show the traveled path.
I have heard that AppSheet is diligently working on this capability and that if all goes well we might just have these capabilities within a few weeks.
I would kindly ask that you post a Feature Request describing your GPS capture and tracking needs so that AppSheet can consider them in their current development efforts.