To be able to send a command on a Service Broker queue, you first need to start a dialog with BEGIN DIALOG. Although in most cases you would work with pooled connections, and get a pooled conversation handle from a table, if it is available. Once you have the handle, you use the SEND command to send the message. On the other end you use the RECEIVE command.
This forum is good for short and simple questions, but it is not a good venue to learn features from scratch. You have had threads in the past where I and others have suggested reading material about Service Broker, and I suggest that you revisit those threads.