رح استلم الطرد من البريد، وبعدها رح اروح عالبيت.

It is Levantine colloquial Arabic, not formal Modern Standard Arabic.

A few clues:

• رح is a very common Levantine future marker.
• عالبيت is a colloquial contraction of على البيت.
• The spelling is informal, with hamzas often left out: استلم for أستلم, اروح for أروح.

In formal Arabic, you would usually see something more like سأستلم الطرد من البريد، وبعد ذلك سأذهب إلى البيت.

رح marks the future, so it works like will or going to in English.

• رح استلم = I’ll collect / I’m going to collect
• رح اروح = I’ll go / I’m going to go

In Levantine, رح is one of the most common ways to talk about future actions.

Because there are two separate future actions:

1. رح استلم الطرد من البريد
2. وبعدها رح اروح عالبيت

Repeating رح is completely natural and makes both actions clearly future. In casual speech, sometimes people may leave the second one out if the future meaning is already obvious, but using it twice is very normal.

Here استلم means receive, collect, or pick up.

With الطرد (the package / parcel), the most natural English idea is usually:

• pick up the package
• collect the package

So even if the basic meaning is receive, in this context it often feels more like collecting a package from the post office.

Because this is informal everyday spelling.

In more careful spelling, you would often see:

• أستلم
• أروح

But in texts, chats, and casual writing, many speakers simply write:

• استلم
• اروح

So the missing hamza does not change the meaning here; it is just a common informal writing habit.

الطرد means the package or the parcel.

A useful pronunciation note:

• The ال in الطرد is not pronounced as a clear l here.
• That is because ط is a sun letter, so the l assimilates.

So it sounds roughly like eṭ-ṭarad or it-ṭarad, depending on accent.

The ط is also an emphatic consonant, so it is heavier than a plain English t.

Not really in this context. Here البريد is best understood as the post office or the postal service.

So:

• من البريد = from the post office

A more explicit version could be:

• من مكتب البريد = from the post office office / post office branch

But من البريد is understandable and natural in context.

وبعدها means and after that, and then, or simply then.

It breaks down like this:

• و = and
• بعدها = after it / after that

Here, ها refers back to the previous action or situation. So the sentence is sequencing events:

• first I collect the package
• then I go home

اروح is the verb I go in this context, so with رح it means I’ll go.

This comes from the verb راح / يروح (to go).

Just like استلم, the spelling is informal:

• more careful spelling: أروح
• casual spelling: اروح

You may also hear slightly different spoken forms depending on the region and speed of speech.

عالبيت means to the house or, more naturally here, home.

It is a contraction of:

• على البيت → عالبيت

In Levantine, على often gets shortened to عَـ before a word with ال.

So:

• عَ + البيت = عالبيت

This is very common in speech.

Because Arabic and English do not always package movement the same way.

In Levantine, it is very natural to say:

• أروح عالبيت = literally something like go to home / go to the house

English prefers:

• go home

So even though English has no preposition here, Arabic usually does.

Also, إلى البيت would sound more formal or bookish. In everyday Levantine, عالبيت is much more natural.

Because in Arabic, البيت can mean both:

• the house
• home

Context tells you which one is meant.

After a verb like اروح (I go), البيت is very often understood as home:

• أروح عالبيت = I’m going home

So this is one of those cases where a literal translation sounds less natural than the real meaning.

A natural rough pronunciation would be:

raḥ estalem eṭ-ṭarad men el-barīd, w baʿdha raḥ arūḥ ʿal-bēt

A few sound notes:

• raḥ: the ḥ is a stronger, breathier sound than English h
• eṭ-ṭarad: the l of ال disappears before ط
• baʿdha and ʿal-bēt contain ع, a deep throat sound that English does not have
• bēt means house/home

Exact pronunciation will vary a bit across Syria, Lebanon, Jordan, and Palestine, but this is a good general Levantine guide.