Even if you are on a payment plan any and all future refunds will be taken to pay down the balance due ... if you read the installment plan agreement it tells you this will happen.  When you actually pay off the debt then any excess refund will be sent to you.  Watch for a notice in the mail explaining the situation. 

I am asking if I get my taxes back and I know that I owe back rears due I have to send the check back to the i.r.s

Thanks so even though I been approved that does not mean anything 

Even though I have been approved and I get my money what should I do 

How long will it take for me to no if I am getting any money back from the i.r.s

When you submitted your return, you should have saw the amount you were receiving from Federal and State. 

You can track your refund by following the instructions here. 

If you need further assistance, please click here to contact customer support.