If possible, one of the first appointments you should make upon arrival would be with a local Refugee center that is listed with the Office of Refugee Resettlement (ORR). They can help with applying for healthcare benefits, scheduling physicals and TB tests, Work Authorization, cash assistance, English classes, and more!
Facebook has many local groups ready to provide moral support for Ukrainians and sponsors. Search for your state and Uniting for Ukraine on Facebook to find a group near you.