Reporting Services for SQL 2000 was a separate component with its own install process. It will also need IIS installed for it to work.
Best of luck in finding the SSRS 2000 install media.
Original author: https://github.com/SQL-FineBuild/Common/wiki/ 1-click install and best practice configuration of SQL Server 2019, 2017 2016, 2014, 2012, 2008 R2, 2008 and 2005.
When I give food to the poor they call me a saint. When I ask why they are poor they call me a communist - Archbishop Hélder Câmara