We, unfortunately, do not have one simple answer to this question.
There isn’t just one single setting for your camera that ensures great photos. However, if you have manual options, you are probably best served with experimenting with various combinations of ISO, aperture, and exposure settings. As a rule of thumb, ISO setting between 800 and 3200, aperture between f/2 8 and f/5.6, and shutter speed at between 15 seconds and 30 seconds have proven effective.
A good thing to keep in mind, ISO setting between 800 and 3200, aperture between f/2.8 and f/5.6, and shutter speed between 15 seconds and 30 seconds have given great results.
Different combinations may give very different results. Higher ISO setting will allow you to capture faster exposures, but the downside to this might be for example grainier images.
If the shutter speed is above 15 seconds it will result in a slight star movement.
Wider angle lenses are usually more versatile in low light settings, but longer lenses give you different options for compositions. Make sure that you remove all lens filters, as they may distort images. You will probably get the best results with manual setting for infinite focal length.