Shuri's screentime is comparable to other solo movie heroes. She has more than T'challa in the first BP and several other characters in their respective solo movies.
And the only man who gets significant screen time in WF is Namor, who is the villain (and who still has less screentime than Red Guardian in BW and the same amount as Nick Fury in CM). In terms of heroes the screentime is dominated by women.
Princess Shuri / Black Panther <57:30>
King K'uk'ulkan / Namor <22:30>
Queen Ramonda <19:45>
Okoye <16>
Riri Williams / Ironheart <15>
Nakia <14>
M'Baku <8:15>
Agent Everett Ross <5:45>
This includes all Marvel Studios feature films, One-Shot shorts, and Disney+ shows. Times are for how long a character is visible on-screen, estimated one quarter-minute at a time. Current through The Guardians of the Galaxy Holiday Special. Naturally, be wary of spoilers.
m.imdb.com