You can still install Turbo Tax on 5 computers you own. But this year you will have to sign into the same online account. You should use the download method of installing instead of using the CD. It will be easier to install on another computer.
See this FAQ for why do I need to sign in to an Intuit Account this year?
https://ttlc.intuit.com/turbotax-support/en-us/help-article/license-information/install-turbotax-cd-...
Install and Activate the Desktop program
https://ttlc.intuit.com/turbotax-support/en-us/help-article/license-information/install-turbotax-cd-...
There should be a card in the CD case on on the CD envelope that says how to download it and you will need the 14 or 16 digit code from it to enter.
How to download Turbo Tax instead of using the CD
https://ttlc.intuit.com/community/installing/help/i-bought-the-cd-but-my-computer-doesn-t-have-a-cd-...
