I am studying French in a training institution now, and I have plans to go abroad. Do I need to get B1 or B2?

under normal circumstances, if you want to study abroad, you need to reach the B2 level of the European standard system. A1A2 is a basic level, generally applicable to interests, tourism, etc. B1B2 belongs to the intermediate level and is generally suitable for studying abroad and working. C1C2 is equivalent to advanced.

No matter what level, since you are going to study abroad, I suggest you keep improving your language level in order to study and live better. After all, there is no end to learning.