Will I Pay Customs Fees on My Shein Order, and Is the Company Reliable?

I'm planning to place an order with Shein, but I have concerns about potential customs fees. Will I have to pay customs charges, and if so, how much will it be? There is no clear information provided. Could my order get stuck at customs? Most importantly, is your company truly safe to shop with? How can I be sure of that? Is there any assurance you can offer me? I need some form of guarantee because after this small purchase, I plan to make a larger order, and my friends are considering doing the same. Your response will determine whether we proceed with these purchases.