The UN estimates that there are about 7.9 billion people, up from about 6 billion in 1999.

https://www.un.org/en/global-issues/population

https://www.unfpa.org/data/world-population-dashboard

In the last 20 years, we've also added about two billion new people to the world, sitting at about 8B right now. 10B is the predicted max [1].

There, fixed it for you.

[1] - https://en.wikipedia.org/wiki/World_population