Depends on the area. In the US, it’s about $425k a year. For the world though, it’s about $30k a year.
For wealth, the average of the one percent in the US is about $1.3 million. For the world, it depends on where you look, but it’s anywhere from $10 to 50k.
IMO, the problem is not their income; It’s that some billionaires literally hold more wealth than entire nations.