I think what you’re looking for is this.
shell.run "job.bat ""argfile.ext"" " & inp
However, as Ansgar Wiechers points out, this is a potentially severe security hole, as a treacherously crafted XML file could run arbitrary commands. To encapsulate your batch file arguments and prevent unintended consequences, consider switching to the Shell.Application
object’s ShellExecute method.
For Each listElement In xmlDoc.selectNodes("document/Lists/list")
msgbox "toto"
inp = listElement.selectSingleNode("entry").text
out = listElement.selectSingleNode("output").text
jeton = listElement.selectSingleNode("token").text
set shell=CreateObject("Shell.Application")
shell.ShellExecute "job.bat", """a file"" " & inp, "path\to\batfile\", "runas", 1
set shell=nothing
Next