Do you have Python installed in your machine?
In Python Scope you path like this
For Windows projects, the Python Scope activity requires you to install the .NET Desktop Runtime 5.0.17 .
Check this for ref:
Hope this helps
Open a cmd.exe and type where python
Then use that string in the Path.
and try with the 3.6 version of python
Please Install Python 3.7 version Hope that version is compatable with UiPath.