We don't have a specific time frame for individual channels. As long as your channel meets the YPP eligibility & thresholds, you can expect to hear back within a month or so. It might take a bit of time as applications are being manually reviewed. Hope this helps clarify.
Dear @TeamYouTube how much time required to on monetization after completing 4000 watch time and 1000 subscribe. Please let me know. Thanks 
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please enabled my youtube monetization
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