Account acc=[select name,number from account];
// defined method to get field set label field set has name , number field
            List<Schema.FieldSetMember> fieldSetMemberList = Class.readFieldSet('PP_AccountFieldSet','Account');
List<String> fieldLabel;
for(Schema.FieldSetMember fieldSetMemberObj : fieldSetMemberList)
        {
            system.debug('API Name ====>' + fieldSetMemberObj.getFieldPath());
            system.debug('Label ====>' + fieldSetMemberObj.getLabel());
            fieldLabel.add(fieldSetMemberObj.getLabel());

        }