How Many Gods Do We Have?

I believe there is only one God and some people believe in many God, it is just depend on how a person define God

I believe in one GOd with three divine personas: the Father, the Son and the Holy Spirit..

No idea! That's one thing about religion it depends on your faith and what you believe in. Most will say there's only one. But each faith has their own or own set of Gods. Again depends on what faith you were raised in.

I only know and believe in one God.

There is only God, but there are many representation. Human beings from time unknown have wanted something tangent to beleive in and hence they start worshipping even the messengers of God, who have come in this world as human beings. Hindus have more than 3 million gods, but there is only one almighty so it does not matter who you pray to unless it does not hurt someone else and is not voilent. Because non of the religion preaches voilence, there are always ulterior motives behind voilent regious struggles.