I signed up freely at MongoDB Atlas and created cluster now I want to know how can I create database and connect to that using Robomongo?
In case it helps others, Robo3Tversion 1.3 and greater has a "From SRV" field where you can paste the SRV connection string and it fills out the connection options correctly for you. As of 1.3 it looks like this:
As of writing, you can get the connection string by clicking the "connect" button next to your cluster dashboard's graphs, and then clicking "Connect your application", and you get a screen like this with the connection string that you can copy: