Is there a script that will auto op/voices on join say if Juser X joins, i want the script to auto OP user X

Use the ON JOIN event. See /help on join.

Example:
on @*:join:#channel:{
mode # +v $nick
}

This would auto-voice anyone who joins #channel, provided you're an op.

Do note though, mIRC has its own internal AutoOp and AutoVoice lists, see /help /aop and /help /avoice. These would be easier to use if you're unfamiliar with scripts.

Regards,