The ornamental design for a flexible displayscreen with graphical user interface, as shown and described.
FIG. 1 is a front view of a first embodiment of my new design for a flexible display screen with graphical user interface.
FIG. 2 is a front view thereof shown in a bending position.
FIG. 3 is a back view thereof shown in a bending position.
FIG. 4 is a bottom view thereof shown in a bending position.
FIG. 5 is a perspective view thereof shown in a bending position.
FIG. 6 is a front view of a second embodiment of my new design for a flexible display screen with graphical user interface.
FIG. 7 is a front view thereof shown in a bending position.
FIG. 8 is a back view thereof shown in a bending position.
FIG. 9 is a bottom view thereof shown in a bending position; and,
FIG. 10 is a perspective view thereof shown in a bending position.
The broken lines illustrating an electronic device illustrate portions of the article, and form no part of the claimed design. The broken line showing the flexible display screen and portions of the graphical user interface are included for the purpose of illustrating portions of the article and form no part of the claimed design.