PROC PROBIT contains a lot of options for probit regression models. However, it does not contain an R-square statistic.
If you want to experiment with PROC PROBIT, you can use
proc probit data=MyData;
model y = x1-x10;
run;
You can also use PROC LOGISTIC with the LINK+probit option to perform probit regression. The LOGISTIC procedure supports the RSQUARE option, which prints a generalized R-square statistic:
proc logistic data=MyData;
model y = x1-x10 / link=probit rsquare;
run;
Both these calls generate a table of parameter estimates and other statistics. If you use the NOPRINT option, no output will be displayed. If you want to save a table into a SAS data set, you can use the ODS OUTPUT statement.
For example, to save the ParameterEstimates table into a SAS data set called 'PE', you can use
proc logistic data=MyData;
model y = x1-x10 / link=probit rsquare;
ods output ParameterEstiamtes=PE;
run;