The AMCAS application for the coming cycle permits to you list the languages you speak.
When selecting your level of proficiency, follow these guidelines:
Native/Functionally Native :
I converse easily and accurately in all types of situations. Native speakers
may think that I am a native speaker too.
Advanced:
I speak very accurately, and I understand other speakers very accurately.
Native speakers have no problem understanding me, but they probably
perceive that I am not a native speaker.
Good:
I speak well enough to participate in most conversations. Native speakers
notice some errors in my speech or my understanding, but my errors rarely
cause misunderstanding.
Fair:
I speak and understand well enough to have extended conversations about
current events, work, family, or personal life. Native speakers notice many
errors in my speech or my understanding.
Basic:
I speak the language imperfectly and only to a limited degree and in limited
situations. I have difficulty in or understanding extended conversations.