This will probably explain how to use it better than I can. It's basically the central repository of all the errors that occur on your computer.
Personally, I would open Event Viewer, expand the Software category from the navigation bar on the left (I think that's where 3rd party/non-windows errors are stored, YMMV), and open the DaVinci software to generate an error. Refresh the event Viewer window to see if it captured the crash information.
Unfortunately the information it provides is very technical, so you're probably going to have to do some Google Fu with the results (along with other various pieces of relevant information like 'DaVinci Resolve 18 + Error Code/affected module name/whatnot'). Wish you the best of luck!