There is no "Add a State" on yours, because you are looking at your 2018 taxes....and the e-file for that was turned off in Oct-Nov of 2019......so all you can do is print out your forms and mail them in since e-filing can only be done for 2019 taxes now.
IF you were at the same point in your 2019 Online tax file right now, then the "Add a state" would show up ...but only for that 2019 file.
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The example shown by the first response (from @DoninGA ), is from last year when it was active.....and is only an example of where to find it when looking at the current tax year's forms....(We don't have perfectly exact pictures for every situation)
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