Here are my "answers" off the top of my head.
With respect to the bank account in Germany, even though you said it's only in your brother's name, I suspect you have a "constructive" ownership of the account. In any event, I would act conservatively and report "Yes" at the bottom of your Form 1040, Schedule B on foreign bank account and file a Foreign Bank Account Report (FBAR) with FinCen electronically. See https://fincen.gov/report-foreign-bank-and-financial-accounts
You may also need to file IRS Form 8938, Statement of Specified Foreign Financial Assets with your 1040.
If you received over $100K, you should also prepare a Form 3520, Annual Return To Report Transactions With Foreign Trusts and Receipt of Certain Foreign Gifts.
I don't believe inheritance tax paid to a foreign country would have any effect on your U.S. income taxes as it is not a foreign "income" tax. So no foreign income tax credit.
I suggest you take a look at the U.S. - Germany Tax Treaty:
https://www.irs.gov/businesses/international-businesses/germany-tax-treaty-documents
Even though you didn't physically take any rent money from the bank account, you are still required to complete a Schedule E for the apartment rental. I believe depreciation for the overseas apartment is straight line over 40 years, but not 100% sure. You should be able to use a step-up basis for depreciation purposes. So it's important to get an appraisal as of your father's date of death.
I don't know much about the various versions of TurboTax. I use their Home and Business version and that version should be able to complete your income tax return for you.
I don't believe you can claim your father's medical expenses.
