I don't believe you can get that right now.
Right after the filing season closes, TTX shuts down that tax year's program, starts archiving the full data sets of all their millions of tax files, and when they do that the full PDF isn't available until that is completed. Then the online display is changed over to put that year's taxes (2020 in this case) into the prior-year section of every person's tax account.
You could have obtained it a week-or-so ago, but now you'll have to wait until the archiving is done and they get all the files moved. One week? 3-weeks? December? They (TTX) haven't said when that will be yet, at least not that I've seen published.
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In prior years, once those files were archived and available again, the only PDF that could be downloaded was the full-huge pdf with all the worksheets, which is exactly what you want . Try to remember to always download the large PDF with worksheets right before, or shortly after you file.
Remember also that the W-2 in the system is only a worksheet with whatever data you entered in it (or downloaded into it) ... either correctly or with errors. But of course, that may be why you want to see it.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
