You will need to check the rejection code that was emailed to you to see why your return is being rejected. Please read the TurboTax FAQ listed below and follow the instructions to fix your rejected return.
You are using TurboTax Live Self Employed. Please read the TurboTax FAQ, listed below, on how to connect to a live agent.
https://ttlc.intuit.com/replies/3302275
https://ttlc.intuit.com/replies/6382274