First off, we Buddhists do not worship any deity, not even the Buddha. We revere the Buddha for his teachings, but he is not a god.
As to your question, it is the worlds fourth largest religion in the world with somewhere between 400- 500 Million follower (about 6% of the world's population).
Lots, try googling "National devil worshippers registrar"
In a church
Alot.
temple
India.
Zen
people
A congregation of worshippers.
The Buddhist population of India is around 9,681,547, or 0.8% of the population (2011).
They meditate in front of Buddha or at their houses.
theey dress with dresses hahahahha
Most of the countries in Asia.