The 98 maxima already had a hood that was beginning to separate when I bought it. Yesterday the outer skin stated to come up in the air while driving down the road. What is the suggested method of repair for this issue?

 

Probably replace the entire hood with a used one, and as soon as possible.

 

Well if you really want to fix that one you can probably use that two part black glue that auto body people use. But you can probably find a "new" hood cheaper, faster, easier, etc.