I just bought a Ryanair plane ticket except that I did not see the QR code on the boarding pass, is that normal? the message is : this is not a boarding card go to check-in for visa check and boarding card
Yes. You have a check-in receipt, not a boarding pass. From https://www.ryanair.com/ee/en/useful-info/travel-documentation/travel-documentation
“Irrespective of a passenger's visa requirements, all non-EU/EEA citizens must have their travel documents checked and stamped at the Ryanair Visa/Document Check Desk before going through airport security. Your boarding pass will display this information for routes that you must comply with this Visa/Document checks requirement.”
is that normal?
Yes. It clearly says "THIS IS NOT BOARDING CARD". It's just a check in receipt.
This typically happens if the airline wants/needs to check your documents before they will give you a real boarding pass. So just follow the instructions: take your receipt and documents to the check in counter, and you'll get the actual boarding pass there.