What would you do if you found out that God has nothing to do with religions?

[drfuzzy]

...........and that he never said what is written in the Bible or that he judge you for the bad thing you may have done?  

God never said what is written in the Bible.  Yep, I agree with that.  In fact, I'll take it one step further and say that god never said what anybody claims god said, anytime in human history, anywhere.
God will never judge me.  I'm down with that one too.

So, you're sounding a little Deistic.  I used to speculate (before I ditched theism completely) that IF god existed, god started this human experiment and then just left it alone.
Because if you interact with the experiment, you screw up the results.

But the "what would you do if" question is kind of ridiculous.  No teachings, no judging, no proof of existence, so -- what's the question?  No need to do anything.  No need to speculate on the existence of something that can't be proved to exist.  So we just go on as usual, no change required.