OK, so I know that a lot of people turn up their noses at all the advanced statistics and metrics that are now available, but some of them can be useful tools to help evaluate a player's strengths and weaknesses, and how their play can impact a game in ways that might not be obvious. There is a stat called "successful dribbles", which is when a player beats his marker and drives forward with the ball such that another player must then cover him. I believe that to qualify as successful, they must travel a minimum distance forward, which I think is 10 metres. Although it sounds like this should happen all the time with players all over the pitch, it is actually rather rare in real game situations in the Premier League.
In the 2020-21 Premier League season, Adama Traore led the league in successful dribbles. There were 2 players tied for 2nd; Andre-Frank Zambo Anguissa and Andre St. Maximin. there was a sizeable gap separating those 2 from the following players, Sadio Mane, and then Marcus Rashford. Raheem Sterling was 9th in the league, and Jack Grealish was 10th.
The great value that a successful dribble contributes is that it can destroy the defensive shape of the opposition. When 2 or 3 players converge to defend a player dribbling the ball, that inevitably leaves attacking players unmarked. and although it doesnt always lead directly to goals, it definitely leads to goal scoring opportunities for other players. If a player is surrounded by others who can take advantage of those opportunities, the goals will come.
For those who think that Anguissa has occasional flashes of eye-catching talent, but no end product, I think they may be missing what a lot of professional football people can see; that he can consistently produce those high level performances in the Premier League and La Liga, and if surrounded by the right players, he can contribute greatly to a team's overall possibility of success. That's why they value him so highly in the transfer market.