International students need to provide TOEFL or IELTS. Note that some schools may not accept IELTS scores and need to know. Whether colleges accept GRE or GMAT mainly depends on the needs of colleges and universities. General actuarial majors need GMAT from business schools and usually accept GRE, such as Boston University and Georgia State University. Generally, mathematics departments only accept GRE, such as the University of Iowa and the University of Connecticut. Some schools accept GRE and GMAT. Individual schools need GRE Sub Math, such as the University of Michigan.
When applying for an actuarial major, it is similar to financial engineering, and you should emphasize your mathematical ability. If you don't do well in math at the time of application, it is a good choice to take a math GRE Sub. When preparing documents, besides mathematics, it is best to emphasize your business background. If you haven't attended courses such as financial accounting, you can consider doing some related internships to make up for it. I suggest you choose a school first, and refer to the application conditions and pass rate in previous years. Since you have doubts, it must be good to pass the exam. I hope to adopt. If in doubt, you can send a private letter or add a picture Q.