Look at your avatar next to the thread. It is your "messages." And frankly I don't think you are moderator material. But if you want it you should wait till you can really smash your mod application, you need to blow them away, show them why they NEED you.
you have written 28 Posts/messages. to answer your question: simply check on your profilepage or under your profile picture
Hi @OnlyDIPP , has your question been answered? Would you like a Moderator to lock this for you or do you still have some issue locating the message counter?