A mutual fund is where many people pool their money together, and an expert (aka an asset manager) is responsible for investing it on their behalf. Each mutual fund is different – some invest in companies, others invest in bonds or gold, etc.
Regardless of whether you invest EGP 10 or EGP 1M, all the money is pooled together, and the asset manager’s job is to put that money to work for you. Mutual funds are a great way to start investing in companies, since you delegate that task to a licensed professional.