I doubt you care, so skip down if you don't. I am a starting out youtuber and a league player who enjoys having fun. I decided to try AP Aphelios. I found out it does damage, I made this guide. My youtube is here, you likely know from the video (if you came from it.)
My Channel

Best Guns with AP | Best to Worst | CALIBRUM (SNIPER) - GRAVITUM (CANNON)- SEVERUM (SCYTHE PISTOL) - INFERNUM (FLAMETHROWER***) - CRESCENDUM (CHAKRAM)

*** - INFERNUM IS EASILY THE BEST WEAPON WHEN COMBINED WITH GRAVITUM AS IT ALLOWS FOR A HUGE ROOT. ON ITS OWN IT REALLY SUCKS TO BE HONEST.
CALIBRUM DOES HUGE DAMAGE WITH THE Q (FULLBUILD AROUND 1000) AND ALLOWS FOR SOME REAL ACCURATE ONESHOTS. GRAVITUM DOES A LOT OF DAMAGE AND ROOTS, AROUND 700 FULL BUILD PLUS THE ROOT. GREAT WITH INFERNUM. SEVERUM HAS A LOAD OF MOVEMENT SPEED AS THE MS WITH THE Q SCALES WITH AP, SO NOT BAD IN ITSELF. CRESCENDUM IS JUST USELESS. HAS NO REAL SCALINGS, ONLY FOR EARLY GAME AD FIGHTS OR CSING.

AP Aphelios, or APhelios is not very useful in the laning phase, he is an uber lategame teamfighter who can oneshot half the team with one gravitum R or Inferum Q into Gravitum Q. He is pretty much just a piece of sand pre 4 items. Why are you even playing this man?? Just play AD to be honest. This is a huge ****post and will NOT get you LP. But play it in normals and have some fun.

In conclusion, don't play AP Aphelios, but like this guide and subscribe to My Youtube Channel.