Evidence for a god. Do you have any ?

[possibletarian]

How do you know that? How can you prove it scientifically?

Prove what scientifically ? that a hypothetical  being does not exist , you realise what hypothetical means.. right ?

There is correlation between behaviour and brain chemistry. That doesn't mean that scientifically consciousness exists

Of course it does, just because no one knows what consciousness is, does not mean it's reasonable to say it does not exist we interact all the time with other consciousnesses.

Lets look at the definition.

https://www.google.com/search?q=what+is+...refox-b-ab
consciousness
ˈkɒnʃəsnɪs/
noun
noun: consciousness; plural noun: consciousnesses

   1.
   the state of being aware of and responsive to one's surroundings.
   "she failed to regain consciousness and died two days later"
   synonyms: awareness, wakefulness, alertness, responsiveness, sentience
   "she failed to regain consciousness"
   antonyms: unconsciousness
   2.
   a person's awareness or perception of something.
   "her acute consciousness of Luke's presence"
   synonyms: awareness of, knowledge of the existence of, alertness to, sensitivity to, realization of, cognizance of, mindfulness of, perception of, apprehension of, recognition of
   "her acute consciousness of Luke's presence"
       the fact of awareness by the mind of itself and the world.

We can certainly prove that those things take place. Therefore to say that a state of consciousness exists in a person is reasonable to say. Unless of course you can show that an entity without any sensory faculties can also experience these things, but that would be for you to prove.

There is no evidence at all that consciousness exists. By default we are all p-zombies.

p-zombie are hypothetical not real, they were made up for thought experiments.  They have no scientific base at all.

You seem to live in some dream hypothetical world that bears no relational to reality, which is fine if you want to believe that but at least do us the honour of answering our questions.