I bought Turbo Tax but my computer does not allow me to insert a disc. I have the code so how can I enter it so I do not have to pa

Then use the download method 

Use the download method instead of the CD.  It has more advantages over CD.  Then you can also download it another computer. Once you install the CD you can't install it again like if you need to reinstall the program or install on a different computer.

There should be a card in the CD case on on the CD envelope that says how to download it and you will need the 14 or 16 digit code from it to enter.

How to download Turbo Tax instead of using the CD

https://ttlc.intuit.com/community/installing/help/i-bought-the-cd-but-my-computer-doesn-t-have-a-cd-drive/00/26450

And see this.  How to install with a License Code

https://ttlc.intuit.com/community/tax-topics/help/activating-turbotax-cd-download-software/00/852971

Go to:

InstallTurboTax.com

Sign in or create an account

Enter your license code to start the download

Continue to follow the prompts and activate your software