After gameplay I retimed this run using https://somewes.com/frame-count/ with a console FPS of 60.098813897441 (the NES native framerate according to http://tasvideos.org/PlatformFramerates.html) and raw video framerate of 30 fps for a console total time of 3:02.083 or 5463 frames. First Frame set on the frame the Ship appears on screen and End Frame on the first frame my score gets 30000+ points.

I use Nestopia v1.40 with "Galaga.nes" ROM.

I time my runs manually with LiveSplit during gameplay.

I use Retroflag USB Gamepad controller and NintendoSpy as Input Display.