Not impressed. Jk.
My app has only received around 500 impression over 4 or 5 days. How can I fix that?
Improve your app!
More seriously, there are tutorials or online sessions proposed by Apple to improve apps visibility.
Similar to this one last year (but look for new ones): https://developer.apple.com/events/app-store/
or
https://www.google.fr/url?sa=t&source=web&rct=j&opi=89978449&url=https://developer.apple.com/videos/play/tech-talks/110151/&ved=2ahUKEwiA4vXl5MmFAxWBaqQEHV9PB7gQtwJ6BAgPEAI&usg=AOvVaw22N4kZJKiXrLi1tQDXuaz0
