There is no fix time frame for the ranking in SERP. It depend on competition, what kind of SEO practices are you doing, what are the major differences in your competitor and your link building strategy.
I am agree with above comment you don't say the fix time duration to get ranking..but there are black hat seo technique using this technique you will get the Ranking..
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I am agree with above comment you don't say the fix time duration to get ranking..but there are black hat seo technique using this technique you will get the Ranking..