Use the below connection string to connect to your remote sql server db
Data Source=190.190.200.100,1433;Network Library=DBMSSOCN;Initial Catalog=myDataBase;User ID=myUsername;Password=myPassword;
Here
Remote Sql Server Public IP: 190.190.200.100
Remote Sql server Port number : 1433
** make sure that your SSMS is connecting to this remote server or not.