My bank account linked to my wallet can I pay others from it or add cash from it to my Apple cash

What you can do with Apple Cash

Add money to Apple Cash. 

Make purchases using Apple Pay. 

Send money to someone in the Messages app.

Transfer money from Apple Cash to your bank account.

Use your Apple Cash to make payments on your Apple Card balance.

Receive Daily Cash from Apple Card purchases

I don’t have a new debit card yet

Then you need to wait for the new debit card.

In the mean time you can pay with your Apple ID balance, see the following Apple articles:

Add money to your Apple ID balance

Add money to your Apple ID balance - Apple Support (IN)

What you can buy with your Apple Gift Card or Apple ID balance

What you can buy with your Apple Gift Card or Apple ID balance – Apple Support (UK)

Apple bank details

Tell us what do you mean?