Help with VisualCode and Python

Hi Guys, not sure if this is the right place. Noobie here. I installed VC and Python and the Python extension for VC, but the same error keeps popping when I try to select a Python Interpreter: “Failed to set ‘pythonPath’”. Actually I can’t edit anything on Settings. (e.g. Colour Teme)

The Internet says its a problem in settings.json, but I can’t find it. Or anything. I don’t know anything about VC yet. And I’m a python noobie, so. Anyone can solve it? :frowning: (And explain it like I was a 5 years old?)

Current settings.json is:

{
    "workbench.colorTheme": "Default Dark+"
}

"closeTag.ignoreTags": "html",

"python.pythonPath": "C:\\Users\\<my username>\\AppData\\Local\\Programs\\Python\\Python39\\python.exe

The root of the problem seems to be that I am:

unable to write into user settings