Vi må skru bordet fra hverandre.

No. Må means must / have to, not may.

This is a very common point of confusion for English speakers because må looks a bit like may. In Norwegian:

• må = must, have to
• kan = can
• får can sometimes mean may / be allowed to

So Vi må ... means We must ... or We have to ....

Because må is a modal verb, and modal verbs in Norwegian normally take the bare infinitive.

So you say:

• Vi må skru bordet fra hverandre.
• not Vi må å skru ...

This is similar to English:

• We must take it apart
• not We must to take it apart

Other common Norwegian modal verbs that work the same way are:

• kan = can
• skal = shall / will / am going to
• vil = want to / will
• bør = should

Bordet is the definite singular form, meaning the table.

The noun is:

• et bord = a table
• bordet = the table

So the sentence is talking about a specific table, not just any table.

Also, bord is a neuter noun, which is why the indefinite article is et and the definite ending is -et.

As a whole, skru ... fra hverandre means to take something apart by unscrewing it or to dismantle it.

So this is not just the basic verb skru on its own. The full expression matters.

• skru = to screw, turn, fasten with screws
• skru ... fra hverandre = to unscrew / take apart / dismantle

It suggests that the table is being disassembled, probably by loosening screws or bolts.

Literally, fra hverandre means something like from each other.

But in practice, it often means apart.

So:

• ta fra hverandre = take apart
• skru fra hverandre = unscrew / dismantle
• rive fra hverandre = tear apart

Even though hverandre often means each other, in this kind of expression the whole phrase is best understood idiomatically as apart.

Because that is the normal word order here.

In Vi må skru bordet fra hverandre, the structure is:

• Vi = subject
• må = modal verb
• skru = infinitive
• bordet = object
• fra hverandre = phrase completing the meaning of the verb

In neutral Norwegian, this sentence sounds most natural with bordet before fra hverandre.

So:

• Vi må skru bordet fra hverandre. = natural

A version like Vi må skru fra hverandre bordet is much less natural in ordinary usage.

Yes, it can be, if the table is assembled with screws, bolts, or fittings that you loosen by turning.

So skru bordet fra hverandre suggests:

• the table is in parts
• those parts are connected with screws or similar fasteners
• you are dismantling it by unscrewing them

If you want a more general verb that does not focus on screws, Norwegian often uses:

• ta bordet fra hverandre = take the table apart
• demontere bordet = dismantle the table

So skru ... fra hverandre is a bit more specific than just ta ... fra hverandre.

Yes, often you could.

• Vi må ta bordet fra hverandre.
• Vi må skru bordet fra hverandre.

The difference is mainly nuance:

• ta ... fra hverandre = take apart, more general
• skru ... fra hverandre = take apart by unscrewing, more specific

If the method matters, skru is better. If you are just talking generally about disassembling it, ta fra hverandre works well.

You would usually say:

• Vi må ikke skru bordet fra hverandre.

That means We must not take the table apart.

Be careful: in Norwegian, må ikke usually means must not, not don’t have to.

If you want to say We don’t have to take the table apart, you would more naturally say:

• Vi trenger ikke skru bordet fra hverandre.
• Vi behøver ikke skru bordet fra hverandre.

That distinction is very important.

The past tense is:

• Vi måtte skru bordet fra hverandre.

Here:

• må becomes måtte
• skru stays in the infinitive because it still follows a modal verb

So:

• Vi må skru ... = We must / have to take apart ...
• Vi måtte skru ... = We had to take apart ...

If skru were the main finite verb by itself, its past tense would be skrudde:

• Vi skrudde bordet fra hverandre. = We took the table apart by unscrewing it.

It is neutral everyday Norwegian.

Nothing in the sentence is especially formal or especially slangy. It sounds like normal spoken or written Norwegian.

• Vi må skru bordet fra hverandre. = natural, everyday
• Vi må demontere bordet. = slightly more formal or technical
• Vi må ta bordet fra hverandre. = also everyday and very common

So the original sentence is perfectly normal in ordinary conversation.