赶得及 is the positive potential complement form of 赶 (to hurry) + 得 (potential marker) + 及 (to reach in time). It means 'can make it (in time)' — you use it when you believe you have enough time to catch a bus, finish a task, or reach a destination before the deadline. The negative form is 赶不及 (cannot make it). This pattern (Verb + 得 + 及) is a fixed resultative complement structure common in spoken and written Chinese.