I believe this is the highest possible score. Only a 50% chance of this scoring anything useful, but I got it on my second try.
That's impressive!
But you know, as the dev, I know the highest possible points you can get in a turn is not this one ;)
First of all, it hurts to see the empty "diamonds" ability slot, which could increase your final points even more. Then also, for example, why use "Astronaut"? It multiplies the final turn points by at most x4x10 (where 10 should be the number of cards with a "LENGTH" symbol on the table, which is actually 9, not even 10 in your case), so at most by x40, which is a lot, but not the best you can do... What about, for example, using "Plumber" or "Bellboy" instead? I won't spoil what those abilities do here so I won't ruin the fun and joy of discovering it by yourself, but I can tell you they are better than "Astronaut" in this case... Getting rid of the "Astronaut" would also eliminate the constraint of having to use the 3 "x[LENGTH]" cards at the start of your equation if you get rid of the "FLASK" ability too, freeing both 3 card slots and the "clubs" ability slot, in favor of better cards and abilities maybe, just saying...
So, in the end, I'd say the quest for the highest possible turn score is not over (not even for this limited prototype version of the game).
You want the high score? You can have it! I left everything I gathered together in one place, now you just have to find it!
Btw thank you for playing :)