The 17-year-old was part of the Spurs side that lost to Vitesse in the Europa Conference League on Thursday.
But Nuno insists Scarlett will only benefit from such experiences.
Asked if Scarlett was up to the level, Nuno said: "Dane is 17-years-old. It is tough for him but many of our players when they were 17 were not involved in first-team football.
"He is full of talent, of course details that comes with experience and experience is when he competes against tough opposition like he did today."
Need a VPN? Or seeking to switch? Then support Tribal Football by clicking here to sign up with our official partners NordVPN. Not only will you receive the best VPN experience, but also great discounts by signing up via Tribal Football. Thanks for your support!