Just this morning I got an email from Robot Mesh about the soft launch of their new Virtual Robotics Academy, which is free until the end of April. Right now it is only IQ, but they said that V5 will be coming soon. https://www.robotmesh.com/virtual-academy
It really depends if you want a program that does not relate to VEX then use a program called white-box learning its a lot of fun has lots of different types of projects like a solar powered car, CO2 race-cars, rocket-ships, gilders, and some other things.
If you want something related to VEX then you should check out robot mesh because it has VRC and IQ projects that you can use but it might not be as fun as white-box learning