Hi Guys! I am a junior doing the IB program and I was wondering what a good IB score would be to get into Columbia ED. Also, I want to major in Biology, but would it be okay to do my EE in Literature? Thank you 
Colleges admit students based on the school grades. They will not revoke you if your predicted IB grades are different from the final ones but they are also admitting you way ahead of your exams.
So you should do well in school throughout the year in order to make the cut at any college in US and your IB grades will only matter because your school is predicting them and writing your recommendations based off of that.
They’re honestly not going to care if your EE is on literature. Just don’t force yourself to do a science EE or one on something you don’t like.
No score will guarantee admission to Columbia.