I just wanted to post an update here in regards to my Core Shields refusing to start. The last thing I just did after thinking about the permissions error I was receiving from the terminal command was to boot into macOS recovery mode, then I went into Disk Utility and performed a repair on both of the partitions for the Operating System (the OS partition and the OS - Data partition), the disk utility didn't list any errors or repairs performed on either of the partitions, however once I booted back into macOS Catalina all three core shields started up and are working perfectly fine now! I have no idea what it actually fixed as there was nothing it listed as corrected, but this is what fixed it for me. Also to clarify, reboots did not fix the issue either, as I had done that several times already while troubleshooting.