The ornamental design for a vehiclerackbracket, as shown and described.
FIG. 1 is a top perspective view of a vehicle rack bracket;
FIG. 2 is a bottom perspective view thereof;
FIG. 3 is a front elevation view thereof;
FIG. 4 is a rear elevation view thereof;
FIG. 5 is a right elevation view thereof;
FIG. 6 is a left elevation view thereof;
FIG. 7 is a top plan view thereof;
FIG. 8 is a bottom plan view thereof; and,
FIG. 9 is an environmental perspective view of the vehicle rack bracket.
The broken lines in the drawings illustrate portions of the vehicle rack bracket or a rack that the vehicle rack bracket is interconnected to and form no part of the claimed design.