What is my IP address on my MikroTik router? Where can I find it?

Inside? Just kidding ...
What address are you asking about? Are you connected to your router via WWW or Winbox?

Oh you didnt know about doing a rain dance and then covering yourself in margarine??
Then look at quickset it should be there.

Your router may have several IP addresses. IP addresses are assigned to interfaces of the router. The default IP of the LAN interface (your home network) is 192.168.88.1/24. The IP for the WAN interface the router will receive from your Internet service provider.