The ornamental design for a shoe upper, as shown and described.
FIG. 1 is a side view of a shoe upper showing my new design;
FIG. 2 is a front perspective view thereof;
FIG. 3 is a rear perspective view thereof; and,
FIG. 4 is a rear view thereof.
The long and short broken lines are unclaimed boundaries of the claimed design. It is understood that the claimed design extends to these boundaries but does not include the boundaries.
The even-length broken lines shown in the drawings are for environmental purposes and form no part of the claimed design.