I am trying to find information about electronically filing a tax return for a deceased person. Can I file electronically?

Here is help for filing a tax return for a deceased person: https://ttlc.intuit.com/turbotax-support/en-us/help-article/electronic-filing/e-file-tax-return-someone-deceased/L7Ue102Id_US_en_US#:~:text=Yes%2C%20the%20IRS%20will%20allow,)%20to%20be%20e%2Dfiled.

wife passed on Feb 19 2024 who signs the return THIS IS NOT THE FINAL RETURN THAT IS NEXT YEAR

Yes, you can Efile your joint return for 2023.  You don't officially 'sign', but enter your 2022 PIN or AGI, which TurboTax will fill in for your automatically if you transferred your 2022 return. 

Here's more info on filing after a Death in the Family.

So sorry for your loss.