No that is currently not possible. Script can not modify the copy parameters, it is planned but it a bit complex to add.
However IF you know the file name of the file you want form inside the zip you can use the MultiScript function CopyFile(..).
(Since zip is a virtual filesystem inside MC, most file system function handles zip files as it is a folder, (with some limitations))
@var $srcFile = "G:\\Test\\Test.zip\\Readme.txt";
@var $targetFolder = "G:\\Test\\Test\\";
CopyFile($targetFolder, $srcFile, "NODIALOG, OVERWRITE_ALL");