The salary of the business analyst depends on the experience, your skills, and the employer. There is a job growth rate of 21 from last year for BI analyst roles. Based on the salaries submitted by BI analysts, In India, salaries range from 5 lakhs to 15 lakhs INR per annum. In the USA, salaries range from $60k to $90k with a median of $70k. In England, $24k to $50k per year with a median salary of $35k per annum.
In case if you want to become a BI analyst, I would suggest you enroll in Business Intelligence Master's Program by intellipaat.
You can check it out in this video on how to become a BI Analyst for the more elaborated answer: