Please take care of the following points:
(1) As you can see from prompt, Multiwfn command was not found, that means Multiwfn has not been properly installed. Please check Section 2.1.2 on how to install Multiwfn under Linux. You need to guarantee that Multiwfn can be normally invoked using "Multiwfn" command (or "Multiwfn_noGUI" command if you use noGUI version of Multiwfn).
(2) G09 is not formally supported by sobEDA.sh, using G16 is strongly recommended.
(3) I didn't test sobEDA.sh in WSL, if it doesn't work finally, please use Linux machine, or install a Linux guest system using VMware virtual machine in Windows.
Below is a screenshot of my terminal. Any help or suggestions would be greatly appreciated. By the way, I have done a lot of bonding analysis with other features of Multiwfn, and they work great! Thank you, Dr. Lu, for sharing this program with the community.
Thank you very much in advance, and best wishes.