As described before, all scp takes is the source and the destination.
Of course, you can also have a different system in your destination path and do something such as
Of course, you can also have a different system in your destination path and do something such as
scp ./this-file.txt user@host:~/thatfile.txtif (like in any case) the host is visible from the local system you are running the command on (i.e., reachable via IP or known hostname) and the port (by default 22) is open on both hosts.
There is plenty of documentation on the internet on how to use scp if you are not familiar with its usage.