Here’s a very brief recipe for getting started with Global Illumination and baked lighting but I highly recommend you explore the links to documentation I’ve provided at the end for a more complete approach.
Set your point light to either “Static” or “Stationary”. Note how shadows in the scene are very stark.
In the Editor window, set the lighting build quality to “High” (“Build > Lighting Quality > High”).
Click the “Build” button or just choose “Build > Build Lighting Only”.
Note that the scene is now lit with appropriate bounce lighting. Shadows will be more natural looking and the overall scene will likely be brighter (unless you have a lot of dark objects in your scene that the light is bouncing off of)
You can tweak the amount of bounce lighting in your scene by changing the “Indirect Lighting Intensity” value of the light itself and then building the lighting again.
Links
Here is a quick start guide on lighting:
Here is the documentation on Global Illumination and Lightmass:
Many more lighting topics are covered in the documentation. Here’s a nice list of the topics:
Hope this is helpful!