The ornamental design for a shoe, as shown and described.
FIG. 1 is a front bottom perspective view of a shoe showing my new design;
FIG. 2 is a bottom view thereof; and,
FIG. 3 is a rear bottom perspective view thereof.
The broken lines immediately adjacent to the shaded area define the bounds of the claimed design and form no part thereof. The broken lines depicting the remainder of the shoe form no part of the claimed design.