Received Pronunciation, often shortened to RP, is an English accent traditionally used as a reference in some British pronunciation teaching. It is an accent, not a separate language or a grammar system. Learning English does not require you to adopt RP or erase the accent connected with your own background.
The useful question is what a reference helps you do: understand a recording, compare a sound, or follow a particular pronunciation course. Clear communication is a different goal from reproducing every feature of one accent.
