If your are referring to your 2018 return:

How do I get a copy of a return I filed this year in TurboTax Online?

https://ttlc.intuit.com/replies/3301

Tax returns prepared in the TurboTax CD/download software are stored locally on your computer.

Even if you e-filed, you'll still need to look for your return on your computer or storage device. We don't store TurboTax CD/Download returns on our secure servers like we do with TurboTax Online.

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If you are referring to your 2017 return:

How do I access my prior year (2017) return?

https://ttlc.intuit.com/replies/5574744