It's best practice for jetton transfer to include "forward_ton_amount" into transfer message, resulting sending "transfer_notification" message to "main" wallet address, so you can scan incoming tx of your wallet in question and find jetton transfers. But that behavior is not mandatory.

If you have whitelist of all Jetton (Master accounts) you want to support/display - you may call get_wallet_address method on all of them and get list of jetton wallets to check.

Otherwise, you need to index all blockchain or use 3rdparty indexing service.