As a C corporation owner, you need to file two tax returns. First, the corporation must file Form 1120. That return is due the 15th day of the 3rd month after the end of its tax year. To prepare that tax return, you'll use TurboTax Business, a separate product from our usual TurboTax personal products. https://turbotax.intuit.com/small-business-taxes/
You'll also need to use a personal version of TurboTax to prepare your own tax return. We recommend TurboTax Deluxe or Premier