On the KuCoin Wallet's [Send] page, you can set the miner's fee number manually, or you can use the miner's fee recommended by the wallet by default.
You can refer to other data to set the miner fee. For example, in the bitcoin browser: https://btc.com/stats/unconfirmed-tx, the Home page - statistics - unconfirmed transaction page will display the current best handling fee, you can follow this value to set.
The only official website of KuCoin Wallet is https://kuwallet.com/ .
About KuCoin Wallet
KuCoin Wallet is a secure and easy-to-use crypto wallet that supports multi-chain aggregation powered by the KuCoin ecosystem. With the security expertise of KuCoin and the leading security technology audited by Hacken, KuCoin Wallet is a self-custody wallet with users having full control of their assets. KuCoin Wallet provides the easiest way for users to manage multi-chain assets and enables them to buy, store and view NFT collections directly within the wallet. KuCoin Wallet is a gateway to the world of Web3 for all crypto users.