"can I file an Estate tax return on turbotax?"

In order to prepare a 1041 income tax return for an estate, you will need to purchase a copy of TurboTax Business. https://turbotax.intuit.com/small-business-taxes/

Note: TurboTax Business must be installed and run in a Windows environment; it is not available as an online product nor will it run natively on a Mac. Further, you still need a TurboTax personal income tax preparation product since TurboTax Business is not capable of preparing individual income tax returns (it can only prepare returns for entities).