This is the most common and neutral version of a request for help. In the first case, “помоги” is suitable for addressing a closer, familiar person, and “помогите” is useful when you are addressing an outsider or a group of people. To make the request sound soft, and not like an order, it is worth adding the word “пожалуйста” to it.
Pronounced like: [памаг’и́ / pamag’í] / [памаг’и́т’э/ pamag’ít’e].
For example: I cannot make out anything that is written here. Help, please! — Я не могу разобрать, что здесь написано. Помоги, пожалуйста!