How do you say this in German? How can we say "He might have droven to cinema" or "He might have gone to cinema"?
I also want to know is it possible in German that one sentence has more than three auxiliary verbs like might, have, can, and so on.

See a translation

"He might have droven to cinema": Er könnte zum Kino gefahren sein/Vielleicht ist er zum Kino gefahren
"He might have gone to cinema": same, just with "gehen"



"I also want to know is it possible in German that one sentence has more than three auxiliary verbs like might, have, can, and so on.":

Yes, that's possible, but I think 3 verbs is already quite rare, and if a tense would require more verbs, people tend to use subordinate clauses or adverbs to circumvent such expressions. Also note that modal verbs (especially when used subjectively) are mostly mutually exclusive (not always, but in many cases), and so you would have to form a sentence with passive, a tense requiring an auxiliary verb, a modal verb etc., which many even many Germans would consider to be very weird (fo example):

Das Kind wird haben operiert werden müssen (Futur II Indikativ Passiv + Modalverb)

(here are some "weird" german tenses:
https://deutschegrammatik20.de/deutsche-grammat...
)