You should file as married filing jointly. You report all of your own income and all of your husband's income on your joint tax return. Your husband probably had some income, either from working earlier in the year, before he became unemployed, or from unemployment benefits. But even if he had no income at all you should file as married filing jointly.
Since Texas has no income tax, you only have to file a federal tax return, not a state tax return.
Are you asking about 2019 or 2020? It's too late to file with TurboTax Online for 2019. If you have not yet filed your 2019 tax return, you have to use the CD/Download TurboTax software for 2019.
Make sure you keep all of your financial activity, including anything you own, completely separate from your tax-evading family's finances. If the IRS ever catches up with them, they will owe a huge amount of back taxes and penalties. If they can't pay it all (or resist paying) the IRS could put a lien on their home, and possibly seize their bank account, their shop, or anything else that they own. You don't want to get caught up in any of that.
