Any list of movies to watch especially with a 8yrs boy will be appreciated.

8 yr old boys will watch nearly anything.
It depends, what you as a parent, want them to watch.
My 3 boys, at that age, watched nearly anything as long as sex wasn't shallowly represented.
Some horror was off limits.
Nearly anything science fiction was okay.
Most top box office action was okay.
Family fantasy was okay.

Here are a few suggestions of family/children's movies but 8 year old boys may not be interested in most.
http://ghostown.freeforums.net/board/36/family-children-movies
A Dog's Way Home (2019)
Wonder Park (2019)
The Secret Life of Pets 2 (2019)
Alladin (2019)
Dumbo (2019)
The Nutcracker and the Four Realms (2018)
Bernie The Dolphin (2018)
Mowgli: Legend of the Jungle (2018)

Now for actual movies they might want to see...

Lake Placid Movie Series
Terminator Film Franchise
Alien Universe Film Franchise
Marvel Cinematic Universe Film Franchise
Star Wars Film Franchise
Bloodshot (2020)
James vs. His Future Self (2019)
Axcellerator (2020)
Godzilla: King of the Monsters (2019)
X-Men: Dark Phoenix (2019)
Hellboy (2019)
Shazam! (2019)
Alita: Battle Angel (2019)
Glass (2019)
Bumblebee (2018)
Fantastic Beasts: The Crimes of Grindelwald (2018)
Aquaman (2018)
Mortal Engines (2018)
Venom (2018)
The House with a Clock in its Walls (2018)
A-X-L (2018 )
Ready Player One (2018)
Skyline 2: Beyond Skyline (2017)
Kong: Skull Island (2017)
Life (2017)
Cloverfield 3: The Cloverfield Paradox (2017)
Bright (2017)
Downsizing (2017)
The Dark Tower (2017)

Thanks alot