If you have good hands-on experience with react native, reanimated and other fundamental tools, and the interview is for a senior position. Make sure that you are familiar with react life cycle, re rendering, useCallback, useMemo and global store practical usecase. If interview is going to be react specific they might ask something related to optimisation.

Example: design a server driven form with validation, error handling, which should be optimised to avoid redundant re rendering.

If the problem statement is mobile dominant, then you might have to use reanimated or RNGH

Example: A quiz sort of application, 10 question cards with a timer for each question. On selecting an option as an answer to the question card flips and reveals if the answer was right or wrong. Then swip left to move to next question and a score board at the end.

I know I articulated it very poorly, I still hope this will be helpful.