At first, he was really scared.
scared of (doing) something
I've always been scared of dogs.
Don't be scared of asking for help.
I wanted to ask her out but was scared that she might refuse.
scared to do something
The boys were scared to cross the street.
scared stiff/scared to death/scared out of your wits (=extremely frightened)
I was scared stiff at the thought of making a speech.