The final bobblehead is linked towards the end of the video
Or here – https://www.youtube.com/watch?v=YQfJk9MTVgo
edit 2: number 20 requires making magnum ammo and going to Mikhail then returning to the rooftop with the ladder and it appears in a corner up there. will make a video later on it.
Ok so we as a community have managed to find all 20 bobbleheads in Resident Evil R3make.
I also had the brightness turned all the way up so I could see in those dark corners which is why the video may look a little washed out.