As someone who used to chair our fellowship application committee - no one cares about top 10%, we place much more emphasis on ITE score. It’s virtually pass/fail.
That being said most who do very well on ITE also tend to do well on BASIC. Just how standardized tests work.
In general, though, scores matter much less than for residency apps. Really no one cares for jobs.
I would expect the exam to go forward. They might have to split it over more than a few days but testing centers will be innundated this summer with the backlog they will have to catch up on. Some are already reopened actually for stuff like EMT tests.