A simple workaround while waiting for a built-in rounding option is to keep the QSM score as it is and round the percentage separately when you need to present the final result.
For example, a score of 92.07% would normally be rounded to 92%, while 92.50% would round to 93%. This can be useful when checking quiz results or preparing a cleaner report for users.
For quick verification of percentage values, I also use this calculadora porcentajes online, which makes it easy to check the calculation and confirm the rounded result.
Hopefully QSM can eventually add a formatting or rounding option directly to variables such as %CORRECT_SCORE%, since that would be the cleanest solution.