You enter the License Code after you install the program from the CD. Did it install? Are you on Windows or Mac?
If you have WIndows 10 and the CD won't load see
https://ttlc.intuit.com/community/bugs-and-error-messages/help/nothing-happens-when-i-insert-the-cd-...
Windows Troubleshooting Installation…..
https://ttlc.intuit.com/community/troubleshooting/help/troubleshoot-installing-and-running-turbotax-...
