I said on Facebook I'm starting at IT business/company.
I'm setting up the tax online unown to them
Maybe the law could get involved
1) would the police do anything if people reported me saying I haven't properly set it up and not registered for tax or months after, saying where is the tax etc
2) I said I have a chance to get married
What if people say, who is she and something is wrong
Not this nonsense again! How many of these paranoid threads have you started? The police don't have anything to do with tax enforcement. If your fear of people reporting you for this, that, and the other is real and not simulated, you should talk to a doctor about your irrational fears .
Worry about tax after you've made some taxable profits.