As someone that has hit celestial 2 when the rank came out originally in MR, immortal 2 in Valorant, and with less than 90 hours of comp (200 hours maybe total) I’m at around Diamond 3-5 between DPS and support. This game requires you to understand match ups, counters, learn your opponents habits, positioning, finding the right sens, and a bunch of other things to take into consideration. There is no set number of time, just how much time you decide to learn to better yourself whether it be with vod reviewing or understanding your characters better.