If 'helper' means 'someone who helps', then what is 'someone who got helped'? Whom does the helper help? Is there any term to define it?
There isn't really a single word in English that means exactly what you are looking for. 'Beneficiary' can be used if the help is financial in nature, for example, or 'recipient' if the help involves giving something (object, money, advice etc.), but it depends on the context.
For a completely generic term, I think you can't get much more concise than 'one who is helped' or 'recipient of help' I'm afraid.