I'm using Windows PC, so your mileage may vary. Printing is probably a bit different with your Mac, but the principle is the same.
You should be able to get it a couple of ways.
It should be in the PDFs of your return that you can make this way:
When you print the return or make a PDF, you should get a print preview screen where you can choose "All official forms required for filing" or "Forms to review to keep for your records." You can view that PDF and print out what you need. Both of those choices have the Filing Instructions.
Or to view/print just the Filing Instructions, in that Print Preview window choose the option "Specific form" and put a checkmark for Filing Instructions (there may be 2 pages.)
OR you can use this alternate method:
Go into Forms Mode. In the forms list in the left column scroll down near the end of the Federal forms and you'll see the shortened name "Filing Inst", possibly 2 pages.
If you have a state return, then look near the bottom of the state list of forms for the state Filing Instructions.
