The ornamental design for a scooterdeck, as shown and described.
FIG. 1 is a perspective view of a scooter deck, showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left side elevational view thereof
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken line showing of scooter handlebars, wheels, and components aside from the deck are included for the purpose of illustrating environmental structure and form no part of the claimed design.