Global variables

i’m trying to make a jeopardy game for my moms class and i’m having problems with the variables. if you can help me in plain english… that would be great

the point is the class will be divided into two teams. when a team gets a question correct the teacher hits the green button underneath “team one” SUPPOSEDLY adding to the score. if it’s incorrect, the red button is SUPPOSED to subtract from the score. yeah well i can’t figure it out.

help me please