I need R language for development. Previously i was working on Kubuntu and install R language on It using R language installation on Kubuntu. Now i have moved to Fedora KDE 29. Please anyone can tell me how to do it.

Have you asked over in Fedora's forums? R isn't KDE software, so unless someone who uses KDE on Fedora comes around and decides to answer you are unlikely to get a good response any time soon.

Taking a stab at the dark, I would guess that Fedora should have the necessary packages to do R development in its repositories. They may be named differently though so I couldn't say what you'd need to look for.