In order to make for your map to make it ranked:
First, the map must follow all rules in
Ranking Criteria. Any unrankable issues must be removed or fixed.
Second, you have to have at least 5 hypes in your map. This can be done by having at least 5 people other than you hype the map.
Third, you have to have 2 BNs (Beatmap Nominators) who has interest in pushing the map further to nominate the map and eventually, qualify it.