In most cases, individuals file immigration appeals via Form I-290B, Notice of Appeal or Motion. This form is good for appeals to the AAO or the USCIS office. There are some exceptions to using this form. For example, if you want to appeal through the BIA, use Form EOIR-29 instead. Your denial notice will have details about which forms to use for your individual appeal.
Most appeals to the BIA are in writing, not in person. You will not need a hearing except in rare cases. The BIA will simply review your case and decide whether or not the immigration judge made a mistake. If you’re petitioning for your relative, you will use Form I-130.