To start developing reports for SQL Server reporting service (SSRS) , you need first to install the tool, they don't come with Visual studio , in fact they are a part of SQL server.
- If you don't have SQL server installed on your machine, go and install SQL server, and in the features choose "SQL Server Reporting Services".
- If you had it on the machine, use add/remove and add it form the features
N.B. you don't need to run the SSRS Service while developing it's only required if you are deploying the reports