לוחית הרישוי כאן.

• לוחית = plate, small plate, or plaque
• הרישוי = the licensing / the registration
• כאן = here

Together, לוחית הרישוי means the license plate (literally something like the plate of the registration/licensing), so the whole sentence means The license plate is here.

In Hebrew, the verb to be is usually not used in the present tense.

So instead of saying:

• The license plate is here

Hebrew simply says:

• לוחית הרישוי כאן

This is completely normal Hebrew.
In past or future tense, Hebrew does use forms of to be, but in the present tense it is usually omitted.

This is because of a structure called the construct state (in Hebrew: סמיכות).

In a construct chain:

• the first noun usually does not take ה
• the second noun can take ה
• the whole phrase becomes definite because the second noun is definite

So:

• לוחית רישוי = a license plate
• לוחית הרישוי = the license plate

Even though לוחית does not have ה, the whole phrase is definite because הרישוי is definite.

It is a noun + noun combination in the construct state.

• לוחית = the first noun
• הרישוי = the second noun

This works like X of Y in English.

So literally, it is something like:

• plate of the registration/licensing

But in natural English, we say:

• license plate

This pattern is extremely common in Hebrew, for example:

• בית ספר = school (literally house of book)
• מכונת כביסה = washing machine

A simple pronunciation guide is:

• lu-KHIT ha-ri-SHUY kan

A few notes:

• ח in לוחית is a throaty sound, not like English h
• שוי in רישוי sounds roughly like shoo-ee
• כאן is pronounced kan, with a regular k sound here

The main stresses are usually on:

• לוחית → -חית
• רישוי → -שוי

Often, yes. Both can mean here.

• כאן = here
• פה = here

In many everyday situations, they are interchangeable.
However, כאן can sound a little more neutral or slightly more formal in some contexts, while פה is very common in everyday speech.

So you could also hear:

• לוחית הרישוי פה

and it would mean the same thing.

Yes, but the emphasis may change.

The neutral sentence is:

• לוחית הרישוי כאן = The license plate is here

You can also say:

• כאן לוחית הרישוי

but that sounds more marked or literary, or as if you are emphasizing here.

You may also hear spoken Hebrew with an added pronoun for emphasis:

• לוחית הרישוי היא כאן

This is not the most basic version, but it can be used for emphasis, especially in speech.

Yes, לוחית is feminine singular.

That matters if you add adjectives or use past/future forms that agree with it.

For example:

• לוחית הרישוי החדשה כאן = The new license plate is here

Here חדשה is feminine singular to match לוחית.

Even though there is no visible present-tense is, gender still matters elsewhere in the sentence when agreement is needed.

In Hebrew, abstract nouns can still take ה and become definite.

So רישוי means licensing/registration, and הרישוי means the licensing/the registration.

Inside a construct phrase, that definiteness makes the whole phrase definite:

• לוחית רישוי = a license plate
• לוחית הרישוי = the license plate

So even though English does not always say the registration in such a phrase, Hebrew grammar allows it naturally.

In theory, Hebrew often uses של for of, but in this case the construct form is the natural one.

Natural:

• לוחית רישוי
• לוחית הרישוי

Much less natural here:

• לוחית של רישוי

That sounds odd in normal Hebrew.
For fixed expressions like license plate, Hebrew usually prefers the construct form.

It is natural, but it is very short and context-dependent.

It could be used in situations like:

• pointing to where the plate is
• answering a question such as Where is the license plate?
• marking a location in very concise language

Because Hebrew often allows very short present-tense sentences without is, this kind of sentence sounds normal. Still, in real conversation, speakers might use a fuller sentence depending on context.