Beneath your question above it says "TurboTax for Mac", which is a paid desktop product (CD/download), so if that is indeed the product you are using, you should be able to print a copy of the return or any specific forms at will. Please provide the following info:
If you are using desktop software, what/where is the roadblock that keeps you from printing on demand? Are you getting any error message?
On the other hand, if you are using Online Turbotax (website version) to prepare a 2018 return, you cannot print a review copy until you pay the TurboTax product fees. We can tell you how to pay in advance to have full printing privileges, or can tell you a way to preview (but not print) a portion of the return before paying.
I don't use a Mac, so I'm going to ask someone who does to help you later today. In the meantime, please go ahead and provide the additional info I asked for above.
@macuser_22 Are you please able to assist here when you are in the forum today? Thanks!