The Realme GT Neo 2 doesn’t have Android 13 cause the phone was released on 13th October 2021, and the Google Android 13 will be launching in the Autumn of 2022, which means it’s not even released yet. So there is no chance.
The Realme GT Neo 2 is one of the best Android phones on the market that has the best features of Android 11 on its full potential that no Android 12 phone can perform when it was released. So, if you want to buy the phone, check its capability, performance, other UI, and features it has to offer you.