Assuming the you have either paid the TurboTax online account fees with a credit card or have filed the 2018 federal tax return and it has been accepted by the IRS -
To access your current or prior year online tax returns sign onto the TurboTax website with the userID you used to create the account - https://myturbotax.intuit.com/
Scroll down to the bottom of the screen and on the section Your tax returns & documents click on Show. Click on the Year and Click on Download/print return (PDF)
It's not giving me a copy of my 2018 Tax Return. There is no name, blank spaces.
You should be able to access your return by the information DoninGA posted above for you. If you are still having trouble gaining access, please log completely out of TurboTax and try clearing your browser's cache. A full or corrupted cache can keep TurboTax from functioning properly. Please see the below TurboTax FAQ for instructions:
https://ttlc.intuit.com/community/troubleshooting/help/how-to-clear-your-cache/00/26135