TOEFL scores for Ivy League (Undergraduate)

Hi everyone! I have just received my TOEFL scores: I got 116/120, Reading: 30, Listening: 29, Speaking: 30, Writing: 27. I am happy with my scores but I don’t understand why I got 27 on the Writing part.
I am going to apply as an International First-time Undergraduate student to most of the Ivies (Harvard, Yale, Brown, Princeton, UPenn). Do you think my scores are high enough? I know that TOEFL is not required at Harvard: should I still send it? Will it be detrimental to have 27 on the Writing Section?

No. Anything 25+ is excellent. If you get rejected, it will not be for your TOEFL score.