My husband died in 2022. Do I have to file a separate return for him since I received INT forms in his name?

you can't file such a return for him. Who were the heirs to the accounts that generated the interest? they need to report or if his estate hasn't been settled, the reporting would need to be done on form 1041. If you are going to do this return you need Turbotax Business and a windows PC running windows 10 or above. 

I am the Executor of his estate. I do not have a PC, I have a MAC.   I can easily file a return on behalf of his estate. The same thing has occurred with my sisters estate. So I suppose I should file returns on behalf of her estate as well. I can down load the business software if that is what is needed. 

---

@remuller32 wrote:

.....I can down load the business software if that is what is needed. 

---

You can use the business software (TurboTax Business), but you do need to use a computer running Windows.