The tag below your question says that you are using TurboTax Online. You don't download or extract anything to use TurboTax Online. You just sign in from your web browser.
If you downloaded the CD/Download TurboTax software, I don't understand what you did. If you downloaded the software from TurboTax.com, extracting is not normally a separate step. Are you using Windows or a Mac? To install the downloaded software in Windows you just double click the downloaded .exe file to run it, and it installs the software. See the following FAQ for instructions to install on a Mac.
How do I install the TurboTax software for Mac?
If you downloaded the software from somewhere other than TurboTax.com, you might have to check the seller's web site for installation instructions.
