We got a thread here talking about that.
The path is:
C:\Users\[Your User Name]\AppData\Local\BraveSoftware\Brave-Browser\User Data
user data folder, there is another folder called
Default. That Default folder contains all your important info. You can make a copy of it and paste it into a new installation of Brave. Please see the thread for more details. Please keep in mind this method is not perfect, and may not work for everyone.