I am a graduate student with a fellowship. My university sent me a 1098-T and a 1042-S. Should I file both of these? If so, how do I file the 1042-s?
Yes, you can report both your 1098-T and your 1042-S in the Education section.
The 1042-S is considered a 'scholarship' when entering your education expenses.
Here's more info:
https://ttlc.intuit.com/replies/6842768