After a lot of testing and research, finally, my sim finished the challenge.
Gael Minton (randomly generated name) got the following:
Now hopefully I calculated this correctly:
18 skills x 100 = 1,800 x 1.68 = 3,024
I almost had one more skill but ran out of time. Oh well, I'm pretty happy with this score, though
I had a fire, too, on an object I didn't know could have one. I saw the notice of a fire and was like - what? The first time this has ever happened in all the years I have been playing the sims. Fires are always hilarious in the sims, but no sim set themselves on fire, thankfully, just the skill object.