The ornamental design for shoe upper, as shown and described.
FIG. 1 is a front perspective view of a shoe upper showing my new design;
FIG. 2 is a side view thereof;
FIG. 3 is a second side view thereof;
FIG. 4 is a front view thereof;
FIG. 5 is a rear view thereof; and,
FIG. 6 is a top view thereof.
The broken lines immediately adjacent to the shaded area define the bounds of the claimed design and form no part thereof. The four unshaded regions within or adjacent to the shaded area form no part of the claimed design. The even-length broken lines within the shaded area represent stitching. The uneven-length broken lines immediately adjacent to the shaded area define the bounds of the claimed design and form no part thereof. The uneven-length broken lines showing the remainder of the shoe represent unclaimed subject matter and form no part of the claimed design.