Front wheel tilted fork alignment problem
I am 99% sure the dent in the fork blade is damage, and probably part of the problem you're seeing.
The way you set up the two sections of allthread in the dropouts is smart, and is similar to the way dropouts are aligned. You could try to set the dropouts into alignment with the setup you've got, or bring the bike to a shop that has proper alignment tools, that might allow for more leverage and precision. There should be only one position for the two dropouts where the centers meet and both sections of allthread are aligned.
Alternatively, since this fork probably is damaged, you could replace it. An equivalent replacements wouldn't be that expensive.