H-1B petitions must be delivered to USCIS between April 1 and April 2019 in order to be eligible for Fiscal Year 2010 lottery selection. There are about 65,000 regular H-1B quota numbers plus 20,000 advanced-degree quota exemptions available in 2020.
USCIS will begin accepting H1B filings for 2020 on beginning on April 1, 2019. If your petition is delivered before April 1, it will not be considered for the lottery selection based on the recent H-1B lottery selection patterns. Due to overfilling of H-1B petitions, USCIS will stop accepting new filings received by April 5, 2019.