Some of the luckiest YouTubers out there can get views for a single video to reach 1 billion. However, most YouTubers are not lucky enough to get such views. You may be able to get $18,000,000 if people view your ads in a single video a billion times.
It takes time and dedication to get views on a video to reach 1 billion. However, it is possible for a single video to get views in excess of 10 billion. Most of the YouTubers who are successful at this are also extremely talented and have established a following.