is anywhere one word or two? also the word "anytime"

used in a song, I typed

"I'm going to live so God can use me; anywhere Lord, anytime"

is that grammatically incorrect?

"Anywhere" is one word. "Anytime" is also one word.

For your sentence, I believe the semicolon should be replaced by a dash:

"I'm going to live so God can use me--anywhere Lord, anytime."

A semicolon is used to join two independent clauses (a clause contains both subject and verb). "Anywhere Lord, anytime" is not a clause.