Unfortunately, this is not possible.
The text is drawn in the texture of the tile.
You can only move the camera further away from the map.

We are already doing some research on how to implement vector text.
But I can not say exactly when it will be implemented and will be implemented at all.

Is there any way to increase the quality/resolution of the map or have text dynamically like Google Maps does themselves?
The quality of the text is really bad even though I've set the map resolution pretty high.

Width and Height: 7168
Size in scene: 64 x 64

This width and height are already a bit too big because it makes the application really slow. It's better around 4096, but that makes the text quality even worse.
I'm also OK with using a different map than Google's if that would solve the problem.