Here are the topics and their weightings that you need to prepare for your Salesforce App Builder certification exam:
Fundamentals of Salesforce (Number of questions: 5)
Data modeling and management (Number of questions: 12)
Security (Number of questions: 6)
Business logic and process automation (Number of questions: 16)
Social (Number of questions: 2)
User Interface (Number of questions: 8)
Reporting (Number of questions: 3)
Mobile (Number of questions: 3)
App Development (Number of questions: 5)
If you are preparing for the Salesforce app builder exam, I recommend this Salesforce Training Course by Intellipaat.
Also, check out this video on Salesforce: