How to display files with permission number in Mac Terminal?

Hopefully this will work for you:

stat -f "%p %N" * | awk '{$1=substr($1,length($1)-2)}1'

Output:

755 Benchmark
755 BoundedBuffer
755 CImgGenerateVideo
755 CImgInterpolate
755 Flask
755 Folder
644 LUT.png
755 Mosquitto
644 MrBean.jpg
755 ThreadSync
644 URLs.txt