I am having multivalue field containing numeric value, I want to apply formula on each value of the field. Which of the formula will accomplish the task?

The @Transform function in Domino formula language applies a specified formula to each element of a list or multivalue field and returns the transformed list. This is exactly what's needed when you want to apply an operation to each value in a multivalue field. @Replace substitutes values, @ListEvaluate doesn't exist in standard formula language, and @ListProcess is not the correct function for this purpose.