how many points are required to reach the mythical level

chamanec

I've been going up and down the rank about 5 times, from legendary to mythical level, now I have 26 points, I don't know how many points I need to reach the mythical level,I only have the mythical logo but not the blue background color

EA]Geralt

As long as you have points in Mythical tier (even if you only have 1) it will count as Mythical whenever the season ends unless you de-rank due to inactivity.
As for the blue background color, you'll get it by the end of the season. so let's say you finished as Platinum, you'd have a light blue background, and light green background if you finished as Diamond, etc.