This is the 1182nd most frequent Russian word.
где
"Где" means "where."
In this sentence, 'где' is used as part of the conjunction 'где бы ни', expressing a hypothetical or indefinite location.
Где бы я ни был, я всегда думаю о доме.
Wherever I am, I always think of home.
The word 'где' is used as an interrogative adverb to ask about the location where someone resides.
Где ты живёшь?
Where do you live?
Here, 'где' serves as a conjunction to introduce a subordinate clause indicating a location.