Draining battery
Why does my MacBook Air drain so much battery while using Uworld even though the battery health is still at 100%
Battery health and battery runtime are two different things. Health tries to estimate in general terms how long a life the battery will have. Runtime is how long a charge lasts for a specific charge cycle.
Apparently Uworld is a battery intensive app; check with the maker.
Apple has guidance on how to optimize both lifetime and runtime.