There are two ways to check your MT4 account number.
Option 1:
1. Log in to your Bybit account and click on the Assets page, followed by MT4. Alternatively, you may click on this link directly.
2. Refer to the MT4 account number as shown in the screenshot below.
Option 2:
Refer to the email sent to your registered email address after successful account registration. You will receive your MT4 user name, along with both the Master and Investor passwords.