The most common and most likely answer to this crossword clue is the 4 letter word HERE
I've seen this crossword clue in The Times
H
E
R
E
More clues leading to the result HERE
- He entertains the Queen in this place
- Now try to get picked up
- Reportedly receive sound in this place
- The fellow gets about — but not there
- Governor entertains Queen in this place
- Now listen to sounds
- You say this on finding His Eminence outside before show
- Present from that woman, ultimate in lingerie
- Lady’s Equerry's first in attendance
- Fellow engineers in the FT?
Buddy explains!

The straight part
We know that "Now" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case now = here.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does HERE mean?
HERE noun- (abstract) This place; this location.
- (abstract) This time, the present situation.
- Filler after a noun or demonstrative pronoun, solely for emphasis.
- Filler after a demonstrative pronoun but before the noun it modifies, solely for emphasis.
- (location) In, on, or at this place.
- (location) To this place; used in place of the more dated hither.
- (abstract) In this context.
- At this point in the argument, narration, or other, usually written, work.
- Used semi-assertively to offer something to the listener.
- Used for emphasis at the beginning of a sentence when expressing an opinion or want.