From the Super Mario Wiki
Retrieved from "https://www.mariowiki.com/index.php?title=Area_X-4&oldid=2509505"
The level features three Mini Marios, though not necessarily in the same starting positions.
One Mini Mario begins at the middle right while the other two begin near the top left, with the exit door at the bottom right. In order to reach it, they must simply be guided via a series of Purple Conveyors, High Springs, and Shy Guy Blocks to it.
The M-Token is located near the middle left, suspended in midair. To collect it, a Mini Mario must simply follow a left-facing Purple Conveyor on the level above.
Mini Mario Card
In order to earn a trophy, the player must score 15000 points.
In Plus Mode, the two Mini Marios must be guided to the exit door first, followed by the Mini Peach.
In order to earn a trophy, the player must score 13700 points.