Usually the fit questions of your interview will be approximately 10-15minutes long. The answers may differ greatly - it’s not about the amount of time you answer, but rather the quality.
Answers should always be structured, start with the direct answer to the question and then build into greater detail to give concrete examples or further details to what your initial statement was. Always be sure to back it up! For example, don’t just say you’re a team player, make sure you also say why you are one.
Prepare by making a list of usual fit questions and preparing your personal answers for them.
Choose topics that complement what your interviewer already knows about you through your resume and cover letter.
Hope pé it helps,