When you op up in a channel it means you get the little '@' symbol next to your nickname. You cannot op yourself with a command, but there may be a 3rd party that can op you - you can only be opped by someone else with op status OR with a channel service if the network supports it.
If you have access to any bots then ask your friends for the command to op up with it. You may also try /msg bot-nickname help.
If your network has a channel service such as ChanServ, X, Q or L, then you may want to op yourself with that - ask in the #Help channel or again, ask your friends who are ops, how to do this.