The ornamental design for a shoe, as shown and described.
FIG. 1 is a perspective view of a shoe showing my new design;
FIG. 2 is a right side view side view thereof;
FIG. 3 is a left side view thereof;
FIG. 4 is a front view thereof; and,
FIG. 5 is a rear view thereof.
The broken lines showing a shoe upper throughout the views illustrate the portion of the article that forms no part of the claim.