conversion from RData to R file

Dear all
I am beginner in R coding and have a problem to figure out how to
convert RData format into R format.
After I converted csv file using read.csv  I got RData file but to run
some R code need R format

You can simply load the Rdata file into R.  Then, whatever was in that file
will be in your workspace, and if there was R source code in the Rdata file,
it will available as the objects it represents.

See ?load.  Also, you will likely need to spend some time with the Intro to
R documentation.

Sean