I have already filed a return and taken the live help, but I received a message saying it was rejected. I can not find the filing details in Turbotax.

First, please check the status of your filing in TurboTax by following these instructions:  TurboTax Tools: Where's my Refund?

If your return has been rejected, please see this TurboTax Help Article: What does my rejected return code mean and how do I fix it?