I cannot see your data set, so I can only guess at question. For starters, I would put your descriptive statistical keywords into the top line next to data=
. This should at least generate some form of result:
proc means data=work.sample N MEAN MEDIAN STD STDERR UCLM LCLM PROBT T;
BY _VISNAME;
VAR Total_Score;
output out=work.means;
run;