Suddenly we now have 3 centuries in the finals, and all have came from Gary Wilson right ?, I hope I'm not mistaken, that brings us to a total of 60, 2 more to go in a possible maximum 6 frames.
You are right.
Three centuries have been made so far in the final match and as you said, all three have been made by Gary Wilson. Now, only 1 more century is required, so that the answer to the question number 8 is "61 or more".
Minimum of 3 and maximum of 6 frames are remaining.