Do you have a router? To log in from the outside, you need to configure port forwarding on your PC with a web server port 80 or 10008, depending on your settings. A static external IP address is required, which the router will receive.
You may also need to configure the firewall.
The most safe way is creating a virtual machine in the cloud, install Rapid SCADA there, and upload data from your local system to the cloud system by Rapid Gate Module.
Allowing external access to local resources as described above is possible, but risky.