However on my terminal app the code -bash.3.2#? already features.
That ”bash.3.2#” is not really a code, that’s the default prompt string shown for the bash command shell; for the command line.
Here, that means the command line is waiting for command input.
You could enter the command “id”, or the command “whoami”, (don’t enter the quotes) press return, and see a few details about your login identity.
And as indicated above, the # means you are the root user, and with few restrictions on what you can do or can damage.
El Capitan is difficult to get to from a wiped system, and you will need to follow the installation instructions linked in HWTech’s reply above to get there.