ServiceNow Get Variable Name in Business Rule (Record Producer or Service Request)

current.variables.<variable_name> 

for a record producer where you don't know the variable names this type of approach could work:

var allVars = [];

var producerVars_allVars = new GlideRecord('question_answer');

producerVars_allVars.addQuery('table_sys_id', '6212096e477782504410edf1d16d43ea');

producerVars_allVars.addQuery('question.type', '!=', 11);

producerVars_allVars.addQuery('question.type', '!=', 19);

producerVars_allVars.addQuery('question.type', '!=', 20);

producerVars_allVars.query();

while (producerVars_allVars.next()) {

var varName = producerVars_allVars.question.name.toString();

var varValue = producerVars_allVars.value.toString();

if (!gs.nil(varName) && !gs.nil(varValue) ) {

allVars.push(varName + ';' + varValue);

gs.info('VARIABLE NAME:' + varName + ', VARIABLE VALUE:' + varValue);

}

}