I detest eBay but as another said it is often like it or lump it. Their system is changing, yet again, in February.
For the present it is this.
From "My eBay" select "Selling".
From that select "Payments". See the BLUE BOX. In the blue box left click the "arrow".
The scroll down to "Withdraw" (left click) and you can then elect to take your money out.
Note that how quick you can access your money may depend on your seller rating. I have to wait to the end of the day that I have been paid before my money becomes available to me. But I only sell mostly low value items under £60 or thereabouts.
When you can get through to their agents, either online of using "have us call you" they are able to help you and talk you through the process if your 'phone and computer are adjacent when from where you are making the call.