If i dont know the fundamentals of the Computer science how i will be able to excel and try to invent new things?

Hello there thank you for taking the time to write my essay for my application at University of Southern California (USC)
My first major choice is Computer Engineering and the second choice is Computer Science/Business Administration.
My goal to pursue this majors is to better understand the fundamentals of Computer Science, from Data Structure to Algorithms, they will help me to understand any modern programing language. I want to be part of any conversation regarding computers. The science is evolving everyday with new services popping out. I hear microservices architecture, API, Rest API etc.
I know i’m old, almost 37
I do have a bachelor degree in Business Administration and a graduate degree in Project Management from University of California Irvine (UCI)
I moved to US almost 10 years ago to study to UCI Project Management
Even that will take me 4 years to graduate, but at the end of a wonderful journey i will be able to share my story to other friends and family and be proud of my self for what i achieved, and be able to talk with my fellow co-workers about great projects.
If i dont know the fundamentals of the Computer science how i will be able to excel and try to invent new things.
Thank you