I'm not sure if I can finish this story but I'm going to try.

some suggestions;
the first and foremost beingget a beta reader to correct the numerous and continuous grammatical errors and misspellings. My first impression of your writing is that English may not be your first or primary language.
Do research, even if it's just to double check something. Almost every spell you talked about was either wildly mispelled or completely wrong. it instantly snaps a reader out of the Harry Potter universe.
Reread your own writing. You'll find more of your mistakes that way and get a feel for how the reader is going to experience your writing. There have been sooooo so many run on sentences, repetitive words, and jumbled thoughts that I couldnt understand what you were trying to type.
Make it clear at the very beginning that your rendition of these characters are your own. None of their personalities, language or mannerisms match any of what J.K Rowling founded them on. watch the movies or read the books before writing to get into the headspace of those characters.
each piece of dialogue should be unique to the character, you write everyone very similarly and it makes it very hard to distinguish who is speaking. Narcissa would never speak the same way Blaise does for example.
make a decision early on about how formal or informal your characters are going to be. sometimes you had them speaking oddly formal in an informal situation and other times you had them doing the opposite.

Really think of all avenues of your plot. I was very confused when Hermione took a year off from teaching. if the whole purpose of the arrangement is to help Scorpius then why have her immediately distanced from him. she wouldve continued teaching in order to help him along at school. with the way you have Draco and her tip toe around each other for so long it would've made more sense if she returned to the manor on holidays with Scorpius.
I'm sorry to say its not an easy story to read or keep up with. I hope your writing continues to progress though.

You are sooo amazing... I cried and laughed a lot reading this... great story...

Hmm... That was just sad... I am also sadden that Ginny and Hermione never retained their friendship... Of all the people to fall in love Orion, does it have to be Ron and Lavender's spawn? That's just complicated hahahahaahah

Lucius, don't be stubborn... Take the damn operation hahahhahahaha

Rita still has a black heart but I guess this is how good she can be.

I am so over Rita... Seriously? She will be invited? Why? She is cruel to Hermione.

Harry and Draco's interactions and frenemy status is funny AF.

Yay! Tonks can finally be awake!

AAAWWWWW! I LOVE THE NAMES! Especially Luna's and Zabini's names!

There! Ta-da?! Was that so hard?! Next time, just try talking! (Draco and Hermione are stubborn af)

I still don't trust Skeeter... Wtf.

I hate Rita... I mean seriously... If the thing she wrote are true then why the fuck not? But she is constantly making stuff up.

That was a good practice hahahhahhahahha!

Lol! If I were Scorpius, I would lock Hermione and Draco inside a closet until they talk.

That is just horrible... Just fucking talk...