The score would indeed be 6-1.
Essentially, an extra point is worth 1 point, of course. If either team scores what would ordinarily be a touchdown, a try is worth 2 points.
Then what is at play in the scenario I laid out (rule 11 section 3 article 2) - If the try results in what would ordinarily be a safety against either team, one point is awarded to the opponent.
https://www.sbnation.com/videos/2017/9/2...ok-brad-nesslerI'm not aware of a one point safety ever happening in the NFL, though this rule was added to the NFL in 2015. Previously the play would be ruled dead as soon as possession changed.
There have been (2) one point safeties in college football in recent memory. Both of these happened on blocked extra points, where the defender recovered the ball and retreated back into their endzone, where they were tackled for a safety. So the offense was rewarded with the point and got their 'normal' 7 points.
I don't know of the 1 point safety ever happening - at any level - where the offense is tackled for a safety (on the other side of the field) and the defense is awarded 1 point.
if it does happen, I'd love to watch and listen as the announcers describe what just happened.