When I first start chanting Buddha’s name, will it have any impact if I take exams for others?

Of course. As a disciple of Buddhism, the minimum requirement is to uphold the Five Precepts. Among them, "not lying" not only means not telling lies, but also not doing dishonest things. If you take the exam for someone else, doesn't it violate such rules? These rules set by the Buddha are not just a constraint, but because after the Buddha attains the true state of cultivation, he can see the past, present and future, and can also estimate the origin and result of an event, so a seemingly simple matter , but the implications are far-reaching and far beyond our understanding. At the moment when the Buddha was in nirvana, his disciples asked who else could be their master in the future. The Buddha only said, "Take the precepts as your teacher", but did not say that you would take someone as your teacher in the future. This shows that these rules are very important. I suggest you Don't take the exam for someone else. Amitabha!