سكري الشباك حتى ما يدخل الغبار عالبيت.

Because سكري is the imperative to a woman / one female person: close!

• سكر = close! when speaking to one male
• سكري = close! when speaking to one female

So this sentence is addressed to a woman or girl.

In Levantine, this verb is from سكّر to close / shut.
The pronunciation is usually closer to sakkri or sikkri, with a doubled k sound.

Also, don’t confuse this with the unrelated adjective/noun سكري meaning diabetic or sugary. Here it is clearly the verb from سكّر because of the context.

الشباك means the window.

A few useful notes:

• شباك = window
• الشباك = the window

In Levantine, شباك is very common.
The word is grammatically masculine, which matters for agreement later in the sentence.

حتى ما here means so that ... not or so ... doesn’t ...

So:

• حتى = so that / in order that
• ما يدخل = he/it doesn’t enter

Together:

• حتى ما يدخل الغبار = so that the dust doesn’t get in

This is a very common Levantine way to express purpose with a negative result:

• سكر الباب حتى ما يفوت حدا = Close the door so nobody comes in
• وطي صوتك حتى ما يصحى البيبي = Lower your voice so the baby doesn’t wake up

يدخل comes from دخل to enter / go in.

In this sentence it means:

• يدخل الغبار = the dust enters / gets in

English often uses get in, while Arabic may use a straightforward verb like enter. So even if the English translation says get into the house, the Arabic verb يدخل is perfectly natural.

Because الغبار dust is treated as a singular masculine noun in Arabic.

So the verb agrees with it as:

• الغبار يدخل = the dust enters

That is why the verb is يدخل and not a plural form.

Not necessarily. In Arabic, words like dust, water, air, and other general substances often appear with الـ even when English would use no article.

So:

• الغبار can mean dust in a general sense, not only the specific dust

This is very normal in Arabic.
It does not have to mean a particular known batch of dust.

عالبيت is the spoken contraction of:

• على البيت = to/on the house
• in context: into the house / into the home

In Levantine speech, على الـ often contracts to عالـ:

• على البيت → عالبيت
• على الباب → عالباب
• على الطريق → عالطريق

So عالبيت is very normal colloquial pronunciation and spelling for spoken Levantine.

Because Levantine Arabic often uses على in places where English would use to, onto, or even something like into, depending on the context.

In this sentence:

• يدخل الغبار عالبيت literally looks like the dust enters onto/to the house
• but the natural meaning is the dust gets into the house

This is just how the preposition works in colloquial usage.
You should learn the whole chunk:

• يدخل عالبيت = go/get into the house

rather than translating على word-for-word every time.

In Arabic, البيت literally means the house, but in many contexts it naturally corresponds to English home.

So:

• عالبيت can mean to the house
• but very often it is best understood as home / into the house

Arabic uses the definite article here where English may prefer home with no article.

Yes, the sentence order is very normal.

The sentence begins with the command:

• سكري الشباك = Close the window

Then it gives the reason/purpose:

• حتى ما يدخل الغبار عالبيت = so the dust doesn’t get into the house

This kind of structure is extremely common in Levantine:

1. command
2. reason or purpose

So the overall flow is:

• Close the window, so dust doesn’t get into the house.

You would say:

• سكر الشباك حتى ما يدخل الغبار عالبيت.

So only the imperative changes:

• to a man: سكر
• to a woman: سكري

The rest of the sentence stays the same.

A natural Levantine-style pronunciation would be something like:

• Sakkri sh-shibbāk, ḥatta ma yidkhal il-ghbār ʿal-bēt.

A few pronunciation notes:

• سكري: the k is doubled in speech
• الشباك: often sounds like ish-shibbāk or sh-shibbāk
• الغبار: in fast speech, the vowels may reduce a bit
• عالبيت: pronounced as one smooth chunk, ʿal-bēt

Exact pronunciation varies by region, but that gives you the general spoken feel.