Will I be banned from making runs if I deliberately go afk for more than 200 hours

i dont think so

that's called anti-speedrunning, and you can do that, just try to obtain the slowest run possible

no its called slowrunning and you cant convince me otherwise

Also pls no its so goddamn annoying to verify that run

is there not a catagory for speedrunning the whole game for minecraft classic?

Minecraft Classic cannot be beaten. It is not a complete version of the game. If you want to run the whole game, head over to Minecraft: Java Edition.