It all depends on which university you are going to apply to. We recommend you starting your application as early as possible, preferably in 8th-9th grade. Since many people need to raise the level of knowledge of English, mathematics and possibly specialized subjects. With a good level of language (~upper-intermediate/advanced), it will be easier to prepare for the standardized exams. Respectively, the preparation will be more effective, and the results will be higher. Even if you have not yet decided on your future profession, start learning English. You'll definitely need it.