Studios Treyarch and Infinity Ward shared plans for ranked modes in Call Of Duty: Modern Warfare 2. They will appear only in 2023, at the moment the developers do not specify when exactly. But at the same time, the authors of Call Of Duty: Modern Warfare 2 talked about 5 areas that they are working on this issue:
Competitive modes are being developed are working on divisions that are divided by skill level are working on displaying skill ratings are planning to launch a “top 250 players” leaderboard and are preparing rewards for competitive modes
The developers also announced that they will close League Play in Black Ops: Cold War and ranked modes for Vanguard this month. Rewards can be claimed until November 22.