I also had this problem and I found a way to slove this
Follow these steps :
pkg remove game-repo
pkg remove science-repo
pkg update
It should work now! 🙂
Also btw, termux is permanently shutting down bintary hosted repos example :
https://dl.bintray.com/grimler/game-packages-24 games InRelease
https://dl.bintray.com/grimler/science-packages-24 science InRelease