Is it a condition for seeking knowledge and understanding the religion that one must be a student in a Sharia college, or can this be achieved through other means, given the questioner's desire to join a science college? And is the questioner's viewpoint correct that a person cannot be a righteous believer unless they are knowledgeable in religious matters, and is seeking knowledge advised?

Seeking knowledge is a great act of drawing closer to Allah Almighty. It is not a condition to be enrolled in a Sharia college. Some knowledge is an individual obligation (fard ayn), and some is a communal obligation (fard kifaya). Whoever strives to acquire it is upon good. It is necessary to choose well from whom one takes knowledge, selecting trustworthy scholars who follow the Sunnah and avoid innovations. Today, methods of acquiring knowledge are made easy through tapes and books of proficient scholars. Therefore, the student should benefit from them and seek Allah's help.