So you managed to create a ZorinOS 18Core live USB and booted that OK, but when you chose to Install you have mouse and keyboard working.
To help, we need to know what was done and what you see. So some questions:
What do you see on the screen after boot?
Were there any error messages during installation?
Do you have UEFI or Legacy BIOS?
Which USB creation tool did you use?
In BIOS do you have Secure Boot and Fast Start disabled?
FYI: Some basic pre-installation advice here: Before you install