How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 9/21100.0*Supporters Shield
FC Dallas 1 NYCFC 1 +0.3
LAFC 3 Houston 1 Yes
LAFC 1 Toronto FC 1 -0.1
NYCFC 4 Atlanta 1 -0.1
Week of 9/29None
Week of 10/6None
Points
Chance Will Make Playoffs