Typekit Portfolio is included with the Complete Creative Cloud subscription and most single-application plans, such as InDesign CC. You can read more in the System and subscription requirements help page on the Typekit website:
The easiest way to find out which type of plan you have is to sign in to Typekit with your Adobe ID:
And go to the Typekit Account page:
If Typekit Portfolio is included, you will see a note under Billing Details that "your Portfolio Plan is included in your Creative Cloud subscription".
I hope that this helps; let me know if you have any other questions. Best,