Is it permissible for a traveler to shorten and combine prayers when traveling 85 km daily for study, given the impossibility of performing Friday prayer?

The Lawgiver has permitted the traveler - a traveler on a permissible journey, covering a distance for shortening prayers estimated at approximately 83 kilometers - to combine prayers and shorten the four-rak'ah prayer to two rak'ahs. The start of the distance is calculated from the end of the urban area of the city or village. Since the distance mentioned in the question (85 kilometers from your home to the university) does not reach the considered distance for shortening prayers if calculated from outside the city limits, you are not permitted to avail yourself of the traveler's concessions. If you miss the Friday prayer, you should pray Dhuhr as four rak'ahs.