If I Can Be Of Any Help

What if I could help? 3

What is right or when is the best and why, when can I help and when can I help.

Thank you very much!

Both are correct.

There is no better sentence than this, it all depends on your sentence.

If I were you, I would use it first if I could help.

Maybe it helps a little bit.

The first is correct. The second is just as good, but more well known.
However, all help is focused on the smallest and most realistic offer.