When universities say that the minimum requirement is a TOEFL score of 100, it does not matter how you accomplish this score, e.g. it could be 25 points each in Reading(R), Listening (L), Speaking (S), and Writing (W), but it could also be: R28 + L27 + S23+ W22, or any other combination.
However, when universities require a minimum total score AND an additional minimal score in a certain part of the test, usually S and/ or W, you need to fulfill ALL the requirements, i.e. your total score most be 80 or higher, and in case of your example, your speaking score must be 24 or higher. Therefore, like in your example, if someone had the following scores: R29 + L29 + S20 + W20, this would be a total score of 98. So if the minimum total score needs to be 80 or higher, 98 is more than sufficient. But if there is an additional requirement, e.g. a minimum speaking score of 24, then this result, though very remarkable, would not be good enough and not fulfill ALL the requirements.
You may of course try your luck and speak with the university, whether they would nevertheless accept your application, however, universities put these minimum scores in places for a reason and might not be willing to negotiate, because someone who has a speaking score of only 20 might not be conversational and eloquent enough to fulfill speaking tasks, like presentation, required for this particular Masters course.
Finally, I would like to note that it is actually very unusual to have someone achieve R29 + L29 while only scoring S20 + W20. This can only mean two things: this person did not prepare well and is completely unfamiliar with the expected format of speaking and writing, or this person has severe deficiencies in the active production of the English language that do not match this person's advanced ability to passively understand English.
