I got a really high score on IELTS (equivalent of C2) but I speak a mix of English from various places and my accent is also a random mix of American, British,

I got a really high score on IELTS (equivalent of C2) but I speak a mix of English from various places and my accent is also a random mix of American, British, Australian various European-but-non-native English accents and the accent from my native language. Its very hard to keep British and American English apart as we don't know in many cases who wrote something on the Internet and we also read and listen to shows and YouTube videos from various places.