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 left side view of a shoe showing my new design;
FIG. 3 is a right side view of a shoe showing my new design;
FIG. 4 is a front elevational view thereof;
FIG. 5 is a rear elevational view thereof; and,
FIG. 6 is a top plan view thereof.
The remainder of the shoe shown in broken lines is directed to environment. The elements shown in broken lines are for illustrative purposes only and form no part of the claimed design.