If you created your return using TurboTax online then your data is in the account that you used to file it. Just log in online using the exact same login information that you used when you started out and the return should be there.
If you are using the desktop version of the program then the return should be saved to your computer in a file that ends in ".2024tax". You may have to search your computer if this file has been moved from it's original location.
@jimhiles