-snip-
Ledger Live will scan the standard derivation paths with a default gap limit of 20, as Pmalek has pointed out. So m/84'/0'/0'/0/0-19 for segwit. Any addresses beyond 20 empty addresses would not be picked up by default.
In terms of accounts, Ledger Live will allow incremental account numbers
only if it finds some history in the preceding account. So if it finds coins or transactions in m/84'/0'/0', then it will allow you to create an account at m/84'/0'/1', and then will again look at addresses m/84'/0'/1'/0/0-19, continuing upwards with the gap limit of 20 if it finds any history. If you skip an account then you will be unable to recover your coins. So if you never used m/84'/0'/1', but did use m/84'/0'/2', you will not be able to recover m/84'/0'/2' using Ledger Live until you send some coins to m/84'/0'/1'.
Ledger Live does not allow checking of arbitrary derivation paths like Electrum does, so if you have deviated from this scheme then it will never find your addresses.
All in all, better to just not use Ledger Live. It does not allow proper coin control anyway.