The ornamental design for a shoe upper, as shown and described.
FIG. 1 is a right front perspective view of a shoe according to the present design;
FIG. 2 is a right side view thereof; and,
FIG. 3 is a right back perspective view thereof.
The evenly spaced broken lines shown in the drawings are directed to environment, are for informational purposes only, and form no part of the claimed design.
The long and short broken lines are boundary lines, which define the bounds of the claimed design. These boundaries do not exist in reality in the article embodying the design. It is understood that the claimed design extends to these boundaries but does not include the boundaries.