For those trainers keen to start breeding their Pokémon in order to achieve individual Stats in Pokémon Sword and Shield, they are looking for the beneficial item called the Fate Knot. When held by a Pokémon, Destiny Knot ensures that five of its individual Stats go to their children, which players typically give a Ditto with all five individual Stats. Usually, a parent passes on three individual Stats, but with the Destiny node, he passes on five of the two parents, which increases your chances of having the perfect six individual Stats for a Pokémon.
The process of obtaining this item is to go and buy it from the Pokémon Center in Hammerlocke after defeating it. You don't complete the game after receiving all eight Gymnastics Badges, but defeat it when you beat Leon and enter the Hall of Fame. Once you have done this you will gain access to the Battle Points (BP), which you need to purchase this item.
The Pokémon Center in Hammerlocke has a Poké Mart inside, and the merchant will have it on sale for 10 BP. To consistently grab and acquire more BP, you have to beat the Battle Tower multiple times and crush them. However, it shouldn't take too long for you to receive enough POs to get the item.
Since the Judge Individual Stats doesn't unlock until you've beaten the game, choosing to make the item readily available at this point makes sense. You won't need it while you are going through the game browsing the story. The Destiny Knot Object and the journey to creating a Perfect Individual Pokémon Stats don't happen until you reach that point. You're unlikely to get the item earlier with Pokémon with the Pickup ability to get it randomly, but it's such a small chance that you'd better not consider it and move on to throughout the game.