[HELP]Im really having trouble dual booting this hackintosh and I really need some help

SPECS: -Mobo: MSI B250M Gaming Peo -CPU: Intel Core i5-7500 -GPU:MSI GeForce GTX 1060 6 GB Overclock Edition

ISSUE: Ok so ive basically followed every video possible and nothing seems to work, could someone here just give me a guide that could possible help or maybe een some tips. Everytime I pop the USB in and try to boot from it I get an error saying Operating System Not FOund. I currently have Windows installec on an SSD, Games installed on a 1TB HDD, and I have another 1 TB HDD Attached which I was hoping to install Mac OS High Sierra on. Thank you in advance for any hep ive been trying to set up a hackintosh for like 5 years now and now that Ive built this PC (been trying it on laptops before) its really irritating me that I can't do it.