Can't run this program

[lulunac27a]

I get an error when I start the typing game after typing a number to choose the mode:
./typoga.sh: line 80: 15046 % : syntax error: operand expected (error token is " ")

[lulunac27a]

I got an error while saving high score data:
sed: 1: "scores/highScore_random ...": unterminated substitute in regular expression