don’t feel wanted at this job

it’s a fast food place .. I barely started last week and i just don’t feel like i belong anymore .. on monday i was supposed to cash my check but didn’t go get it .. today i’m supposed to go in and i’m thinking i shouldn’t so . i mean wherever you work you supposed to feel wanted and comfortable but this place isn’t making me feel like that , I need a job and money but i can’t anymore . Will they mail my check to me ??? if i don’t get it ?