I've tried lots of different options but none of them would work, if someone knows anything I could try or has any clue on how to solve this problem, I would really apreciate it. -Thanks ^^

I had this problem because I tried to delete SYSTEM from owner of WindowsApp folder in my C drive. If you done the same as me tried to add SYSTEM back to file owner list and give it full control. Worked for me.

https://forum.pso2.com/topic/3681/fix-for-windows-store-wont-install-pso-error-0x80070003