Jesus is God in the flesh. How many God's are there? only one! There is one God, if there were more than one by logic that would be plural, Bible is Monotheistic, that means One God, Bible cleary states there is one God and no others, that means 1, Mono, singular, indivisable, complete in oneself, needing no others, self-sustaining, independent, immutable, solitary, individual!
If you believe in more than one God, than that is polytheistic, i.e. multiple, plural, many, various.
If one was to say there are 3 God's and they are all independent and individual but they are one or singular in one independent individual unit, then you would be defying the two previous statements of fact, that would be illogical, like saying Polytheism is Monotheism or saying one unit is the same as three units, its either one or more than one, it cannot be both, only in delusion and confusion can it be both i.e. 'mystery', mystery religions are not based on reason and truth, Bible is based on reason and truth.
There is only One God and His Name is Jesus Christ, there are no other beside Him, there is only Him, and that is it.