Backend And Frontend integration

Good day everyone,
I am sorry for bothering you this way today but i wanted to ask if anyone could help me out as I am trying to build a bank_app, i have been able to use APIs to get the customers data but i am having issues trying to intergrate it to the frontend side of the application.
Please any assistance or advice would be helpful.
Thank you.


Not a direct answer but may be you can inspire from

Thank you Henry.