Quite frequent, given just how small their percentage of population is.
Jews got attacked nearly twice as much, but that's not newsworthy.
https://www.jihadwatch.org/2016/11/media-claims-spike-in-hate-crimes-against-muslims-fbi-shows-anti-jewish-attacks-over-twice-more-common
Blacks folks being the "most" victimized, is only because the massive amount of black on white crime isn't considered hate crime.