After sending a query letter to a publisher, how long should

>implying there is someone browsing lit that has gotten their work read by a publisher

I hope you mean agent because practically no respectable or legitimate publisher will take unsolicited queries

As for agents, the standard is six months before you can enquire again. Most agents will specify the reading time though.

>>8406724
If you really sent it to a publisher, odds are they won't even read the query. If they do, you may not hear from them for over a year, if at all. You pretty much need an agent or some inside connection to get most publishers to even consider your book.