Congratulations on the petition approval.
Keep the copy safe and make a scan of it, you will need to submit it later on during adjustment of status in the US.
In a few weeks, contact NVC to find out the NVC case number. Your case will sit at NVC until consulate requests it and when the status says “Ready” on NVC CEAC website, you can proceed with scheduling the interview, etc. You do not submit anything to NVC nor do you create an account. Your case merely is strengthened waiting to be shipped to the consulate.