This is mainly a user community forum. But we may be able to help you once you explain more.
What does "send me my income tax for 2018" mean?
Are you wanting a copy of your 2018 tax return? If you prepared it in Online TurboTax, you should be able to download/print the 2018 return at the Tax Home. We can tell you the steps.
Or are you asking how to check on a tax refund that you have not yet received? If so, we can tell you what all you need to do and how you can get help.
Or are you asking about something else?