J1 filing taxes as resident or non resident
Hello,
I am a Colombian in my first J1 Trainee Visa since January 2020. I entered the US on January 1st 2020, my program will end in May 1st 2021. I'm still in the US and need to file my taxes for 2020. Now, I'm not sure if I need to file under non resident or resident as I don't quite understand the Substantial Presence Test. Also I was unemployed from March 2020 to July 2020. Does the stimulus check apply?
Please I'm not sure how to properly file my taxes for 2020.