Hi Frank,
There is unfortunately no Install Guide included. You Receive the mql source code of the Robot in the ZIP (either for MT4 or MT5).
You will have to Download and install Meta Trader 5 and Open the source Code in the Meta Editor. Then compile it and add it to a Chart in MT5.
A more detailled approach is in this Video (from Minute 8): https://youtu.be/G5nQMVWxpQU?si=nK9b3IVkKljwL3Lq
Hope that helps!