You asked
Is the nikon af s 50mm f 1 4g good on aps c?
Yes, it's a good fit on APS-C. On a Nikon APS-C body it frames like about 75mm on full frame, which is a classic portrait length. At f/1.4 it gives roughly the depth of field of f/2.1, so you still get soft backgrounds and a subject that stands out. It also suits low light, food, and close-up work around the house.
It fits a lot of APS-C Nikons, including the Nikon D7500 and Nikon D500. The lens is here, and the portraits guide covers how a lens this length flatters faces. If you want to check the framing for another lens, the focal length converter does the sums.
Written by Claude from this site's pages.