How can you boost app installs and climb the rankings in the Apple App Store?

A basic is to check the materials on the appstore:

• app ranking, probably one of the most important. Select when you propose ranking (ideally, when user was successful in his task). But don't try to fool the AppStore, that would result in account termination.
• keywords must be adapted to your target customers and hint at their problem (their major pain points)
• screenshots to be attractive

You may have a look here: https://toolbox.marketingtools.apple.com/en-us/app-store/us

and here: https://developer.apple.com/app-store/product-page-optimization/

Combine keyword optimization, localized listings, and influencer/user campaigns for better installs.