It says my biggest tax break is 6,000 but it didnt add it why?

The tax break you are referring to is a deduction of your income that lowers the amount that is taxable and makes your total tax amount lower. It is not a refund amount.

You don't get tax breaks back.  They just reduce your income before the tax is calculated so you get taxed on a lower amount.  Like you get $4,050 for each dependent.  That means the first $4,050 of income is tax free.