Let me give you a hand.

- Your suitcase looks heavy. Let me give you a hand. / Ваш чемодан выглядит тяжелым. Позвольте вам помочь.

- Thank you very much indeed. It is really heavy. / Спасибо большое. Он действительно очень тяжёлый.

I can help you with whatever problems you might have.

give a helping hand

We are glad to give a helping hand to those in need. / Мы рада протянуть руку помощи тем, кто нуждается.

I can help you get ready.

I'm afraid I can't help you.

We've got to help him.

You've got to help us.

Is there anybody who can help me?

This should help.

We might be able to help each other.