Replication Monitor can be started from SQL Server Management Studio on any instance of SQL Server, or from the command prompt. After starting Replication Monitor, add one or more Publishers to monitor. For more information, see Add and Remove Publishers from Replication Monitor.
To start Replication Monitor from SQL Server Management Studio
Connect to an instance of SQL Server in SQL Server Management Studio, and then expand the server node.
Right-click the Replication folder or any of its subfolders, and then click Launch Replication Monitor.
To start Replication Monitor from the command prompt
From the command prompt, navigate to the tools installation directory. The default path is C:\Program Files\Microsoft SQL Server\130\Tools\Binn\ .