The ornamental design for a shoe, as shown and described.
FIG. 1 is a rear perspective view of a shoe showing my new design;
FIG. 2 is a rear view thereof;
FIG. 3 is an opposite rear perspective view thereof;
FIG. 4 is a side view, the opposite side being a mirror image thereof; and,
FIG. 5 is a top view thereof.
The broken lines within the shaded area represent stitching which forms no part of the claimed design. The broken lines showing the remainder of the shoe represent unclaimed environmental subject matter and form no part of the claimed design.