That has not yet been determined.
NEVER
no, hinata doesnt kiss naruto when hes sleeping
There is no first episode that Naruto and Hinata kiss because they don't kiss.
Yes, Naruto and Hinata eventually do kiss and have a relationship.
No, they never kiss.
No, he does not kiss her as a child.
No he never did in canon.
No. Sorry.
he does kiss hinata
Nope.
No I don't think so.
No read the manga
As long as you mean "Hinata" they haven't.