To use a 24 word backup phrase / seed phrase, you would need to install wallet software that is designed to be able to import that type of phrase. Most use a type of phrase defined by BIP39 – But some wallets use a different incompatible scheme. You would then be able to use that wallet to spend money that is under the control of private keys generated from the seed number that can be created from that phrase.
Bitcoin core does not support seed phrases at all.
To use a 24 word backup phrase / seed phrase, you would need to install wallet software that is designed to be able to import that type of phrase. Most use a type of phrase defined by BIP39 – But some wallets use a different incompatible scheme. You would then be able to use that wallet to spend money that is under the control of private keys generated from the seed number that can be created from that phrase.
Bitcoin core does not support seed phrases at all.