Log files editor window
Unity editor allows to open editor log via console window. However, there is no way to get log file path or open directory where log file is located from editor. Typical workflow for the developer involves going to https://docs.unity3d.com/Manual/LogFiles.html and finding path needed to navigate to the log file.
Open editor window via Window->Pump Editor->Log files.
Use "Log path to console" button to print log file path to Unity console. Use "Open directory" to open directory containing log file. Use "Open file" to open log file with editor. You can also select log file path in text field to copy it directly.
"Open file" button behavior depends on Unity editor version. For Unity 2019.2 or newer it opens the file with external code editor set in Unity editor preferences. For older Unity versions it opens the file with default application selected to open files of matching extension.