I never filed my 2018 tax return. Can I obtain that information? If so, how? And can I file right now my 2018 refund?

[KarenJ2]

Yes, you can file your 2018 tax return now.  However, it cannot be e-filed as only 2019 tax returns can be e-filed this year.  You will need to buy a separate program for 2018.

File your 2018 taxes

If you are getting a refund, there is not a penalty for filing past the deadline. You have 3 years to file for a refund. If you owe taxes, the interest/penalties will be calculated by the IRS based on how much you owe and when they receive your return and payment. The IRS will bill you for this; it will not be calculated by TurboTax.
 

How do I prepare a prior-year tax return