I doth hath been summoned!
I don’t use the console myself much. But iirc in your
documents/my games/borderlands/willowgame/config/there should be a WillowInput.ini file. It should have the option to assign the console a key somewhat like this (this is what I got):
Again, I don’t really use it myself so idk. However I do have a guy on my Discord that uses it. I can always prod him for the specifics if this doesn’t cut it.