Is it permissible to secretly go to Tarawih prayers during Ramadan, despite the father's prohibition on the grounds of prioritizing studies?

Indeed, a father's contempt for religion and his claim that it is backwardness indicate a grave danger. This is a sign of apostasy and hypocrisy, for Allah Almighty says: "And if you ask them, they will surely say, 'We were only jesting and playing.' Say, 'Is it in Allah and His verses and His Messenger that you were mocking?' Make no excuse; you have disbelieved after your belief." And Allah Almighty says: "That is because they disliked what Allah revealed, so He rendered their deeds worthless." Scholars have unanimously agreed that whoever mocks religion or dislikes any part of it is a disbeliever.

Therefore, you must invite him [to guidance] and clarify the truth to him with gentleness, kindness, and excellence, and seek the help of righteous and good people to advise him. If he responds, then all praise is due to Allah. If he persists, then continue to advise him and treat him with excellence, and do not obey him in disobeying Allah, for there is no obedience to a creature in disobedience to the Creator. If he prevents you from praying Tarawih in the mosque for the purpose of studying, then obey him and pray it at home, as some scholars prefer performing it at home.