You activate SPSS by entering your license code in the License Authorization Wizard. It starts automatically during the SPSS installation process. Please follow the steps in the manual in the confirmation email of your order.
Does the License Authorization Wizard not start automatically?
Windows
Go to Program Files\IBM\SPSS Statistics and search for the "law" application. This is the License Authorization Wizard.
Mac
Go to Finder and click on Applications. Then navigate to the IBM SPSS Statistics folder and click SPSS Statistics to open the License Authorization Wizard. You can also search using Spotlight.