TIBCO Statistica install keys, sometimes called license keys, are provided by TIBCO Fulfillment team only. They do not appear in the TIBCO Support Portal or in TIBCO eDelivery site.

TIBCO Statistica Installation keys are not provided via the eDelivery website under My Account | My License Keys (https://edelivery.tibco.com/):

Instead, they are provided by TIBCO Fulfillment team via email to the registered email account

Here is an example on how the email looks like:

If you are unable to locate the email from TIBCO Fulfillment, please make sure to check your SPAM folder (or check SPAM system, firewall, or appliance, check this as well).  The email will come from the TIBCO domain (@tibco.com).