The ornamental design for a headapparel, substantially as shown and described.
FIG. 1 is a right side perspective view of a head apparel showing my new design, comprising a first embodiment;
FIG. 2 is a right side view of a head apparel showing my new design, comprising the first embodiment, the left side view being a mirror image thereof;
FIG. 3 is a right side perspective view of a head apparel showing my new design, comprising a second embodiment; and,
FIG. 4 is a right side view of a head apparel showing my new design, comprising the second embodiment, the left side view being a mirror image thereof.