What’s it worth? Odd 69 Swinger

First --- sorry to hear you have MS --- follow doctors orders - my sister had MS and lived a long productive life.

Looking at the fender tag - car does look like a low option car - and a little more rare in 318 / 4 speed form.
I had a 1969 R4 Dart Swinger 340 --- it is a great color and will make that car look stunning if done right.
It was named Bright Red for 1969 and also known as Charger Red on the B body platform. Done correctly it looks like tomato red - orange / red depending on the lighting.

In terms of WIW - tough to say but to the right person - $12 + K US dollars as it sits ....maybe $15K.
Good luck with whatever you decide ...