My Brother has applied for I-130 Petition for Alien Relative and i have received Form I-797C under 203 A4 INA . I am legally authorised to work in USA based on I-797 C ?
No, you can not work and you can not stay in the US while waiting for your greencard.
The 797 is merely a receipt that put you on a 10-20 year waiting list.
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