If it's a CD, it should have both PC and MAC on it.
If you ordered the wrong software download, however, you can speak to TurboTax Support by phone during business hours and ask them to place the correct version in your account.
Use the form at the link below to schedule a callback. This time of year they are open 5AM-5PM Pacific (8AM-8PM Eastern) Mon-Fri.
https://support.turbotax.intuit.com/contact