Log:

23   data work.result(rename=(Score=varscore Grade=vargrade)) ;
24    set work.scores ;
25   run ;

NOTE: There were 4 observations read from the data set WORK.SCORES.
NOTE: The data set WORK.RESULT has 4 observations and 3 variables.
NOTE: DATA statement used (Total process time):
      real time           0.02 seconds
      cpu time            0.03 seconds

Commentary:
The syntax for listing the variable names in either the RENAME= data set option or the RENAME statement is original_variable_name = new_variable_name. This creates the following output from the original Work.SCORES dataset:

Output:

WORK.SCORES

WORK.RESULT