If you are a nonresident alein you cannot use TurboTax. You will need to file IRS Form 1040-NR and TurboTax does not support this form.
See this TurboTax support FAQ for Form 1040-NR - https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-forms/turbotax-handle-form-1040-nr-n...
