بهالغرفة في فوضى كتير، ولازم نرتبها قبل الزيارة.

It means in this room.

It is built from:

• بـ = in / at
• هالـ = this
• غرفة = room

So:

• هالغرفة = this room
• بهالغرفة = in this room

In Levantine, هالـ is the very common dialect way to say this before a noun.

Here في means there is / there are.

So في فوضى literally means there is mess / there is chaos.

That means the structure of the first part is roughly:

• بهالغرفة = in this room
• في فوضى كتير = there is a lot of mess

So the whole idea is:

• In this room, there is a lot of mess

This is a very common Levantine pattern for expressing existence.

It is a noun.

فوضى means chaos, mess, disorder.

So the sentence is not literally saying the room is messy with an adjective. It is saying something more like:

• There is a lot of mess in this room

English often prefers messy, but Arabic here uses the noun فوضى.

كتير means a lot / very / much, depending on context.

In فوضى كتير, it means a lot of:

• فوضى كتير = a lot of mess

In Levantine, كتير is very flexible. For example:

• after a noun: ناس كتير = many people
• after an adjective: حلو كتير = very nice
• after a verb: بحبها كتير = I love her a lot

So here it is intensifying the amount of mess.

ولازم is made of:

• و = and
• لازم = necessary / must / have to

So ولازم نرتبها means:

• and we have to tidy it
• and it’s necessary that we tidy it

In Levantine, لازم is a very common way to express obligation or necessity.

نرتبها means we tidy it / we put it in order.

The نـ at the beginning marks we.

A useful point is that after words like لازم, Levantine usually uses the verb without the regular present marker بـ.

So:

• منرتبها = we tidy it / we are tidying it
• لازم نرتبها = we have to tidy it

This is very normal after modal expressions like لازم.

-ها means it.

So:

• نرتب = we tidy / arrange
• نرتبها = we tidy it / arrange it

Here -ها refers to الغرفة = the room.

Because غرفة is grammatically feminine in Arabic, the pronoun used for it is -ها.

In Arabic, especially in the present tense, you usually do not use a separate word for is / are the way English does.

So instead of saying something like the room is messy with a visible present-tense is, Arabic often just says the idea directly.

In this sentence, the first clause uses the existential pattern:

• بهالغرفة في فوضى كتير

Literally:

• In this room there is a lot of mess

So the sentence is perfectly complete without a separate word for is.

قبل الزيارة means before the visit.

Here الزيارة is a noun, so Arabic uses:

• قبل + noun

Examples:

• قبل الزيارة = before the visit
• قبل الشغل = before work
• قبل الامتحان = before the exam

You use قبل ما when it is followed by a verb/clause, not just a noun.

For example:

• قبل ما يجو = before they come
• قبل ما نزورهم = before we visit them

So in this sentence, قبل الزيارة is correct because الزيارة is a noun.

The word order is somewhat flexible.

بهالغرفة في فوضى كتير is natural and puts focus on the location first: in this room.

Other natural Levantine ways to express a similar idea include:

• هالغرفة فيها فوضى كتير
• في فوضى كتير بهالغرفة

The version you were given is completely normal. It just starts by setting the scene with the place first.

The verb is رتّب.

It means:

• to arrange
• to organize
• to tidy up

So:

• نرتب = we arrange / we tidy
• نرتبها = we arrange it / tidy it

In this sentence, the most natural English idea is tidy it up or clean it up, even though the core meaning of the Arabic verb is more literally put in order.