Урок має п’ять питань.

Має is the 3rd person singular present tense of the verb мати = to have.

So:

• я маю = I have
• ти маєш = you have
• він/вона/воно має = he/she/it has

In this sentence, урок is singular, so Ukrainian uses має:
Урок має... = The lesson has...

Because after the number п’ять (five), Ukrainian normally uses the noun in the genitive plural.

The dictionary form is питання = question.
Its genitive plural is питань.

So:

• одне питання = one question
• два / три / чотири питання = two / three / four questions
• п’ять питань = five questions

This is a very important pattern in Ukrainian: after 5 and higher, expect the noun to change.

Урок is in the nominative singular, because it is the subject of the sentence.

The structure is:

• Урок = the lesson
• має = has
• п’ять питань = five questions

So literally: Lesson has five questions.

A learner may wonder whether it should be another form like уроку, but that would not be the normal subject form here.

Yes, this sentence uses має because it expresses possession directly:
The lesson has five questions.

Ukrainian can also express a similar idea with є in a different structure, for example:

• У цьому уроці є п’ять питань. = There are five questions in this lesson.
• Урок містить п’ять питань. = The lesson contains five questions.

So має is the straightforward has pattern.
є would require a different sentence structure.

The apostrophe in Ukrainian is not like the English apostrophe for possession or contractions.

In п’ять, it shows that the consonant п is not softened, and that я keeps a ya-type sound.

So п’ять is pronounced roughly like pyat’, not like a softened p followed by a simple vowel.

Also, the final ь (soft sign) softens the т at the end.

A helpful approximation is:

u-ROK MA-ye pyat’ py-TAN’

Stress:

• уро́к
• ма́є
• п’ять
• пита́нь

So the full sentence is:

Уро́к ма́є п’ять пита́нь.

No. Ukrainian does not have articles like English a/an and the.

So урок can mean:

• a lesson
• the lesson

Which one is meant depends on context.

That is why Урок має п’ять питань can be understood as either:

• A lesson has five questions
• The lesson has five questions

Usually the wider context makes it clear.

Yes, Урок має п’ять питань is a normal, neutral word order.

It follows the basic pattern:

• subject
  • verb
    • object

Ukrainian word order is more flexible than English because case endings do a lot of the grammatical work. So other orders are possible, but they usually add emphasis or sound more marked.

For example:

• Урок має п’ять питань. = neutral
• П’ять питань має урок. = emphasizes five questions

For a simple textbook-style statement, the original order is the most natural.

Урок most often means lesson, but in many contexts it can also refer to a class period or a unit of teaching.

So depending on context, it might mean:

• a lesson in a textbook
• a school lesson/class period

In Урок має п’ять питань, it most naturally sounds like a lesson/unit contains five questions.