You will need to purchase and download the TurboTax Business edition for tax year 2019 to complete a Form 1120 from this website - https://turbotax.intuit.com/personal-taxes/past-years-products/2019/
since you're saying the was no activity for '19, you may want to prepare the return manually by getting the forms from the IRS website
does turbotax business include Delaware and California state taxes ?
@jelenica22 wrote:
does turbotax business include Delaware and California state taxes ?
Yes, with regard to Form 1120.