question #3 Sahih Muslim 676, Book 5, Hadith 377 : In which prayers did Abu Huraira recite Qunut, and what does this indicate about the practice during the time of the Prophet (ﷺ)?

I would say prayer along with you which is near to the prayer of the Messenger of Allah (ﷺ). and Abu Huraira recited Qunut in the noon and in the ‘Isya’ and in the morning prayer, and invoked blessing (of Allah) upon Muslims-and curse upon the unbelievers.