I have just started learning the basic German language. In an exercise, I had to fill in the blank in the following question with a question word:
W___ macht Tina?
I saw that macht means power/make and it does not make any sense to write a question which ends with make/power Tina?
You are confusing a noun with a verb.
The verb machen means ‘to make’, ‘to do’, while the noun die Macht means ‘power’.
ich mache
du machst
er/sie/es macht
wir machen
ihr macht
sie/Sie machen
In your example, Tina is referring to she (sie) and because of this reason, the question is in the sense of “What does Tina do/make?”. In the question, you wrote in your question, the conjugated verb macht ‘[she] does’ is used instead of the noun Macht ‘power’.
machen also means "do". There's only one possibility of meaning since there's no objective:
Was macht Tina? - What is Tina doing?
Was macht also has a colloquial meaning that could be rephrased as "What's new to tell about...?" This is a very handy phrase for German learners that can be applied to anything:
Und was macht Tina so? - Die hat ihr Studium geschmissen und gibt jetzt Surfkurse auf Fuerteventura.
Was macht deine Wohnungssuche? - Schwierig. Immer passt irgendwas nicht, meistens die Höhe der Miete.
Was macht dein Deutsch? - Jaa, langsam langsam ist es ein bisschen besser.
The typical situation for this would be not having seen someone for a certain period of time and then briefly 'going over' the common themes.
