The ornamental design for a decorative bill for sportscap, as shown and described.
FIG. 1 is a perspective view of the decorative bill for sports cap;
FIG. 2 is a perspective view of the decorative bill for sports cap in an alternative environment;
FIG. 3 is a slightly reduced top view of the decorative bill for sports cap of FIG. 1;
FIG. 4 is a slightly reduced right side view of the decorative bill for sports cap of FIG. 1. (The left side view of the decorative bill for sports cap is symmetrical to the view shown in FIG. 4);
FIG. 5 is a slightly reduced bottom view of the decorative bill for sports cap of FIG. 1; and,
FIG. 6 is a slightly reduced front view of the decorative bill for sports cap of FIG. 1.