Did you get a CD or buy the download? If you have the CD there should be a card or on the CD envelope giving you 2 ways to install it. Either using the CD or by downloading the program.
How to install TurboTax CD/Download software with license code
https://ttlc.intuit.com/community/tax-topics/help/activating-turbotax-cd-download-software/00/852971
