Sorry for your loss. A business or estate tax return is different from an individual's final personal tax return. If you are confused about preparing the person's estate/business return and the final individual Form 1040 for them, you can contact customer support for some guidance or maybe seek local paid tax help with this sad task.
To call TurboTax customer support
https://ttlc.intuit.com/questions/1899263-what-is-the-turbotax-phone-number
Customer support is available from 5 a.m. to 5 p.m. Pacific time Monday-Friday