You can add the SYSPARM option to your command like this:
sas.exe -sysin C:\Users\meaneych\Desktop\BATCH_SAS_test\batch_sas_test.sas -sysparm '5 7 123456789'
Then in your SAS session you can do the following to separate the values passed with SYSPARM. In this case the first value is mu, 2nd is variance and 3rd is seed.
%let mu=%scan(&sysparm,1);
%let variance=%scan(&sysparm,2);
%let seed=%scan(&sysparm,3);
data test.dat_mu&mu._var&variance. ;
do i = 1 to 12;
x = &mu + sqrt(&variance)*rannor(&seed) ;
output ;
end ;
run ;
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