I apologise if this question has already been answered, but I am new to this platform.

Can anyone assist on how I receive the Roach Gwent card? Have been playing on PS5, all the NPCs seem to have the Roach card with the ability to muster from Geralt/Ciri, but how do I receive this card..I have done a search on the internet but it doesn’t explain very well

Any help would be appreciated,
Thank you

Welcome to the forum.
I have no precise answer to your question, but i can say that you can get cards, either by winning them from Gwent opponents, like merchants or innkeeper. Other cards you can buy from merchants or find them in the world. Sometimes you can play Gwent with people - that you have to free from bandit camps - after they return to their homes. When you free them they tell you where to find them. There is also a book that tells you how many cards you missed in certain regions. The card you refer to is a 3 points card. It is not that great and needs to be in the deck with ciri or geralt at tha same time.Without them it is bad. Your deck is shuffled from your general deck, unless you have only the minimum amount of cards in the pool. I don't know exactly where to find that card, but i would adwise that the path to the card is more meaningfull than the card itself and the joy on said path you have. Good luck on the path.
ps. And there are Gwent circles in the regions that play gwent as well.

Start GOG Galaxy.
Get the free Gwent game and start it once.
The Roach gwent card should appear in your inventory during the current and future playthrough.
https://gamerant.com/the-witcher-3-get-roach-gwent-card-guide/

If you know how to add items through the console, the item ID is: gwint_card_roach