Well IF you are prepared to accept that the Book of Mormon is a genuien ancient document then you would have no problems finding fulfilled prophecies in it.
I have to say, however, that although it is often claimed that there is an impressive record of fulfilled prophecies in the Bible nobody seems to be able to find much. Often they have to pass off failures as successes or poetry as prophecy. If the Bible is so full of fulfilled prophecies then why would they do that ?