There is currently no bulk uploading or bulk listing feature. Do not create a bot or script to mint on your behalf, as you will trigger H-CAPTCHA and potentially lock your account.
This does mean you will have to manually mint and list your NFTs one by one (or create several drafts and mint them all simultaneously). We are aware of the labour subsequently involved in minting large collections, but we’re unable to offer further support while the marketplace remains in beta.