Set up RealVNC account remotly

Hi,

Is there a away for me to sign into my RealVNC account remotely? my parents live about an hours drive away and i made the silly mistake of not setting up VNC server on the machine at their home. Now i can download and install RealVNC on the machine but im wondering if there is away i can access the pop up where you have to sign into your RealVNC account remotely (command line/SSH)

Thanks in advance