If there is no TXID for your withdraw please create a ticket here.
It usually take about 3-10 confirmations for a BTC transaction to show up in your account.
Other proof-of-work coins have adjustable confirmation times based on the current hashrate of the network. Confirmations increase with decreasing hashrate for security.
It is recommended to file a ticket if your transfer has not shown up after 15-20 confirmations. Alternately you may seek support in our official Discord.