Though never explicitly stated in S.S. Rajamouli's epic action-adventure film, various aspects of the movie's story give the title RRR meaning. RRR is the biggest Telugu blockbuster to date. With relentless action, exciting musical sequences, and breathtaking visual effects, the Telugu movie has soared in popularity among the biggest movies of 2022. However, the story doesn't really explain what the title means, and it only provides vague hints at the visual "FiRe" and "WateR" themes of the film. However, there are certain clues to the RRR meaning.

https://screenrant.com/rrr-movie-title-meaning-translation-explained/