You are a new seller so there may be some initial holds before you can withdraw your eBay Balance. You have to do this manually it's not automatically paid into your bank account.
You can only withdraw your money when it is showing as Available in your Payment Summary tab ( top of the page). Then, as said, s long as there is no initial hold on your payout, proceed this way below.
Strangely some members have found this works on some devices and not on others, so worth trying on apps / PC and laptops use Chrome, until you find the combination that works for you.
Click on Payments >> Summary then any payout available for immediate withdrawal, is available for you, in a big blue banner.
Click on the > arrow, top right you may need to log in again, or even verify your account by receiving a text or email code.
Your eBay balance will show at the top, click on withdraw bottom right.
Have you provided eBay with your bank account and had this verified with 2 micro deposits? If not see here as you have to register for eBay's Managed Payments so you are able to be paid.
https://www.ebay.co.uk/help/help/selling/getting-paid/introducing-managed-payments-ebay?id=4795
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