Bip39 Seed Phrase. You would probably then do a standard recovery which has a command like the one down below. (This command utilizes a sample wallet file bunlded with BTCRecover) No, there is not any specialized limit to your length of the passphrase. Even so, with the sake of memorability https://thejillist.com/story8770336/bip39-generator-https-linktr-ee-bip39-the-single-best-strategy-to-use-for-bip39-wallets