0
In the image you put in the question there is a field for you to type a command, type the command to run the current script, in my case I would type:
/usr/bin/python %path%
When you confirm you will be prompted for a short name for the command, of the name you want, for example: "Run Python".
Maybe it just works too python %path%
instead of placing the full python path, to find out the possible python paths on your system, type, in the command line:
$ whereis python
Saida (in my environment):
$ whereis python
python: /usr/bin/python3.6m-config /usr/bin/python ....
After you do the above procedures, a new option will appear in the Run menu of notepadqq, which is a "shortcut" to run the current file in python (with the name q vc put).