I need a code for my TV. I ask for the code It has a code F5663UD7 and said go on Pandora to active

Pandora on Vizio

Probably through an email registration. Not the TV itself, obviously.

You must activate device from PC, Smart phone etc... then your device will be registered. You cannot register from your device.
I hope this helps you.
Here is the link to "step by step".
http://help.pandora.com/customer/portal/articles/24643-create-an-account

If you have forgotten your code, you can retrieve it from the product you are trying to set up. Simply select the Pandora option on your product, and it will give you a code to use to perform the reset.

Yes

If you are a subscriber to Pandora, I would suggest contacting Pandora directly regarding your account.

Just visit https://help.pandora.com/customer/portal/emails/new and send them a message with the details about the problem you are having.

Hope that helps!

I'm sorry but this is not a warez site...We can't give out activation keys or access codes.

HOW TO ACTIVATE MY NEW SOUNDBAR

Depending on what tv you have, google and look for activation code like this Samsung page will give you some idea
http://www.samsung.com/us/article/know-your-apps-pandora

On the TV screen, there should be an option to get a new code. Typically, the code is time sensitive, so you need to use the activation code within 30 minutes, or so. To join your device and your Pandora account, you do need a Pandora account, and have the password for this account to use on the PC. The activation code on the TV will be different. Hope this helps.