Allow Extendscript panels to access and modify masks in Adobe Premiere
Extendscript should be able to read and set points on masks just as expressions in After Effects are now able to do. See feature request DVAPR-4226166.
Kamil Pekala commented
You can use my Mask To Transform extension to read the mask path keyframes and apply them as position/rotation/scale on a transform effect. Then you can read them from Transform via ExtendScript normally