TurboTax does not have a copy of your 2018 W-2. It has your 2018 tax return and worksheets that were filled out based on data you entered from your W-2. Are you wanting a copy of your 2018 return? If so, we can tell you how to get the 2018 PDF from your account.
If you do need a copy of the actual W-2, see this:
FAQ: How can I get a copy of my W-2?
Please help 2018 2019 return
In order for someone to help you in a user community forum, you need to ask a specific question with enough details that someone will know what it is that you want to know. This is a public forum, however, so don't post any personal information.
Since you chose this thread which was asking about downloading/printing a W-2, are you asking how to download/print your current 2019 return that was prepared in Online TurboTax?
And are you asking how to download/print your 2018 return that was prepared in Online TurboTax?
This thread topic is about W-2's, but as explained in my answer above, TurboTax does not have a copy of an actual W-2, only information from a W-2 that you entered on your return.
I can give you more info once you explain what your issue is and what you are wanting to do.