Are you asking about 2022?
If you have no income at all for the entire year, why are you filing a tax return?
If you do file a tax return, use the address where you want the IRS to send any mail that they might send you. It can be a foreign address.
You can no longer file for 2021 with TurboTax Online. TurboTax Online for 2022 should be available in early December, but you cannot actually file until sometime in January. The IRS has not yet announced a starting date for filing 2022 tax returns.