okay.
creat global variable called " second"
creat global variable called " score "
Every 1 second > add to 1 'second"
If your character overlaping 'Rings' and "second" Small or = 20
Add 10 point to "score"
If your character overlaping 'Rings' and "second" large then 21
Add 50 point to "score"
If your character overlaping 'Rings' and "second" large then 31
Add 10 point to "score"
And so on...
Hope it'll help you, if i understand what you mean :D, i'm bad at English.