The ornamental design for a displayscreen with graphicaluser interface of an incubator, as shown and described.
FIG. 1 is a front view of a display screen with graphical user interface of an incubator.
FIG. 2 is a back view of the display screen with graphical user interface of an incubator.
FIG. 3 is a top view thereof.
FIG. 4 is a bottom view thereof.
FIG. 5 is a right side view thereof; and,
FIG. 6 is a left side view thereof.
The broken lines in FIGS. 1-6 showing the monitor are included for the purpose of illustrating environmental structure and form no part of the claimed design. The broken lines showing portions of the graphical user interface in FIG. 1 form no part of the claimed design.