I not understand fine this... in the .bat file not need to enter the cfx wallet address? Do I have to enter my user ID which I use to access their pool?
Yes, just use your f2pool username instead of your address..
What will the command line be?
nbminer -a octopus -o stratum+tcp://cfx.f2pool.com:6800 -u Kings2021.Test -d 2
Is this?
Yes.
You can always verify your status on the pool website, if your hashrate is there then everything is correct..