@ vk29
On the "signature" screen that asks for a 5-digit PIN, you can use any 5 digits of your choosing (and the screen should say that) except it can't be all zeros. Some people use the same 5-digit PIN year after year, but it's not necessary for that signature screen. A lot of people probably don't even save it. You can create a new 5-digit PIN every year, if you wish.
There is also another screen that asks for your 2023 AGI to verify your return. If you did not file a return in 2023, then one would use an AGI of 0.
