There is no credit or benefit known as the "welcome Canada benefit". You can contact Canada Revenue Agency (CRA) for the right name.
As a new Canadian, you may receive benefits or tax refunds. You are eligible for most of the same benefits as other Canadians, but you have to apply for these benefits and file your income tax return, (and your spouse’s if you have one).
For more information about the benefits and credits for newcomers to Canada, please visit the Canada Revenue Agency (CRA) and the TurboTax article link that is given below.
Benefits, credits, and taxes for newcomers
New to Canada? Welcome! Here Are Some Tax Breaks
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