Meaning of “go up” - Learner’s Dictionary

go up

phrasal verb with go uk us /ɡəʊ/ verb [ I ] (present participle going, past tense went, past participle gone)
INCREASE

B1 to become higher in level:

House prices keep going up.
BE FIXED

If a building or sign goes up, it is fixed into position.

EXPLODE

to suddenly explode:

There was a loud bang, and then the building went up in flames.

(Definition of “go up” from the Cambridge Learner’s Dictionary © Cambridge University Press)