From the Super Mario Wiki
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The level features three Mini Marios, though not necessarily in the same starting positions.
One Mini Mario begins at the middle left while another begins at the top center and the last one begins near the bottom right, with the exit door on the top right. In order to reach it, they must simply be guided via a series of Blue Ladders to it.
The M-Token is located near the top top left, atop a platform only accessible via Blue Ladder. To collect it, a Mini Mario must simply use a Blue Ladder to reach up there while heading left.
Mini Mario Card
The Mini Mario Card is located at the very center, between two Blue Ladder rivets. A Mini Mario must use the Blue Ladder directly to the right while heading left to reach it.
In order to earn a trophy, the player must score 14000 points.
In order to earn a trophy, the player must score 13100 points.