If you are good at academics your chances of winning a scholarship are much more than other students. There are scholarship programs that are offered on basis other than academic merit, but by far the most common criteria for awarding scholarships is academic merit. The scholarship programs that do award scholarships without academic merit also require students to show a minimum level of academic performance, simply because students are students first.
So there are many merit based scholarships available for students who excel in academics but you will have to go through the process of searching and applying for a scholarship. One way of searching for scholarships is to search them by using normal search engines, these search engines will search scholarships for you but they will also throw a lot of scam at you. Moreover the process of finding and reading individual scholarship programs becomes very hectic. So you should make use of scholarship search engines that will provide you information on scholarship programs arranged according to countries, categories, criteria etc. There are over 50 of such scholarships search engines working on the internet.
If you have a very excellent academic background you may also search for merit based scholarships offered by government organizations in your country. These scholarships are tough to qualify for but they generally contribute higher amount towards your education costs. If you are from a developing country whose information is not present in the database of scholarship search sites then your only option is to search for scholarships offered in your country randomly over the internet.
Some colleges and universities will also provide discounts in fees according to your grades. These institutions will provide a higher discount to higher grades and may even waive the full fee if your grades are very excellent.
After you have found a program that suits your needs you must read the requirements of the program carefully. Make sure you provide all the documents and information required by the scholarship provider. You should understand that scholarships are never awarded to people who do not meet the minimum requirements, making multiple applications is a very good idea but you should only apply for courses you are eligible for. If you are applying for an international scholarship you should contact the local embassy of the respective country to know visa requirements and apply only if you are able to meet those visa requirements. Applying only on scholarship programs you qualify for will save a lot of your time and effort.