so i need a new scr or add the codes in our scr for force join team from spect to team the admin want
You can do that with above script. If you want something else describe your exact needs in detailed way.

so what the command to force join team from spect to team without waiting "teamswitchdelay 120" and without auto balance ?
Above script doesn't wait teamswitchdelay and doesn't balance anything for you. Commands can be found in three first setcvar fields, jspec, jallies, jaxis. If you want these to be something different just change them by yourself.