The ornamental design for a nailpolishbottle, as shown and described.
FIG. 1 is a top, front, and left side perspective view of a nail polish bottle in accordance with the invention;
FIG. 2 is a front elevational view thereof, the rear elevational view being identical;
FIG. 3 is a right side elevational view thereof, the left side elevational view being identical; and,
FIG. 4 is a top plan view thereof.
The broken line showing of a cap in the drawing views is included for the purpose of showing environmental structure that forms no part of the claimed design.