There isn't one specific answer. I know of 2 people who received Columbia waivers. Their scores ranged between 167-171. One of the applicants was a URM, so not sure if that changed the calculus at all...
I don't think they have a specific score range for fee waivers. My score on file isn't impressive, and I received one last month. My friends with a 172+ did not receive one.
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Here's to hoping my retake tomorrow changes that