No, not unless they were done on the same computer. The returns are not saved or stored in your online account. Only the License Code. A desktop return is only on the computer that prepared it. And I think it keeps track of how many efiles were done in your account. So If they did 5 efiles on another computer you might not be able to efile anymore from your computer.
For each tax return that was e-filed there will be an Electronic Postmark Report which has the date/time the federal tax return was e-filed and the date it was accepted by the IRS, if accepted.
You will have to Continue each tax return and then click on Forms. When in Forms mode on the left side of the screen at the bottom of the list for federal tax forms, schedules and worksheets will be the Postmark Report. Click on the report to open.
What details do you want to see? You can check the efile status inside the program. Open your return and go up to menu item
File > Electronic Filing > Check Electronic Filing Status
If you want to see the returns you open each return and can switch to Forms Mode.
Let's say my family members use the same Turbo Tax account that is associated to the same key of the 2023 Turbo Tax version (a new change in 2023 version) to create and file five different tax returns. My question is whether we can see each other's tax returns in detail such as incomes?
No, not unless they were done on the same computer. The returns are not saved or stored in your online account. Only the License Code. A desktop return is only on the computer that prepared it. And I think it keeps track of how many efiles were done in your account. So If they did 5 efiles on another computer you might not be able to efile anymore from your computer.