How do I use this?

[AirmanRNC]

No description provided.

[TarCV]

Hi. Sorry for the late reply.
Basically you just download the latest release and run command like botc script.botc BOTLUMP, where script.botc is a script source file and BOTLUMP is a name of output file to be created. Also botc_defs.bts containing various definitions should be in the working directory.
Example botc sources are https://wiki.zandronum.com/CRASHBOT and https://wiki.zandronum.com/HUMANBOT , they might use a bit obsolete syntax, but it should not be hard to fix.
In the worst case you can download debotc and decompile bot binaries (like CRASHBOT lump) from zandronum.pk3, after that you'll need to replace integers with booleans where appropriate (or just use botc_defs.bts from debotc repository, which doesn't use booleans in definitions at all).
This link might be useful too - https://zandronum.com/forum/viewtopic.php?f=11&t=9941&p=115780

Overall in Zandronum each bot logic consists of two files: it's compiled logic script like CRASHBOT and actual bot definition in BOTINFO lump. That bot definition links to the script with script line, see https://wiki.zandronum.com/BOTINFO