You can use TurboTax for your 2020 federal tax return. If using the TurboTax online editions you will need the Deluxe edition or higher - https://turbotax.intuit.com/personal-taxes/online/
If you have foreign earned income that would be reported on a Form 2555 that is part of the federal tax return, Form 1040.
The foreign earned income exclusion amount for tax year 2020 is $107,600
Go to this IRS website for foreign earned exclusion information - https://www.irs.gov/individuals/international-taxpayers/foreign-earned-income-exclusion
Also, review IRS Publication 54, Tax Guide for U.S. Citizens and Resident Aliens Abroad - https://www.irs.gov/forms-pubs/about-publication-54
If you are a US citizen or US resident and your spouse does not have a Social Security number or an ITIN and you are not applying for an ITIN with the tax return then you can only file your tax return as Married Filing Separately. Where asked to enter the spouse's Social Security number enter 999-88-9999. You can only print and mail your tax return, it cannot be e-filed. When you print the tax return erase the Social Security number for your spouse and manually enter NRA for non-resident alien.
See this TurboTax support FAQ for the procedure to print and mail a tax return using the online editions - https://ttlc.intuit.com/questions/1944348-how-do-i-print-and-mail-my-return-in-turbotax-online
