We use all right as an adjective after verbs such as be, feel, seem or look, but not before a noun (predicative adjective). It means ‘well’, ‘OK’, ‘satisfactory’:
A:How are you?
B:I’m all right.
A:Is everything all right?
B:Yes, fine thanks.
Was your meal all right?
Not:
Was it an all right meal?
All right may be written as alright, but all right is more common:
There was an accident and the bus driver was injured, but all the passengers were alright.