Commands are case sensitive.
Virtually all native commands are lowercase.
Many environment variables are uppercase.
Most every *nix tool is a building block and mnemonically named.
pwd is a command that you enter at the command prompt of a terminal window.
It stands for - print working directory - iow, display to the standard output the directory that was current when the command was issued.
You may open multiple terminal windows.
If it's easy for you to get the "root terminal" then in one of those, you can get to your own environment, which means going to your own home directory with your identity in that window by saying, in the terminal window -
And then provide your credentials.
Terminal windows are independent. You can have any user in any state in any one, and not affect others already open.
Please take care with the caps key, it's harder for me (and probably others) to help. I thought you've been dealing with something else because of those.