The ornamental design for a label, as shown and described.
FIG. 1 illustrates a front view of a label according to my new design; and,
FIG. 2 illustrates a front view of a second embodiment thereof.
The broken lines in the figures illustrate an exemplary barcode and form no part of the claimed design.
The thickness of the label forms no part of the claimed design. The surface of the label shown is understood to be flat, the linear indicia simulating a bow consisting of two-dimensional surface ornamentation.