App in bubble

Need a mid-senior mobile dev that can work with the Bubble framework (https://bubble.io/), and need to build an application that can connect worldwide bank accounts, crypto exchange wallets (allow also go to the exchange trade option) and use the money the user has deposited throughout his bank account. The application will have also a referral feature, plus a link to a course platform, allowing customers to do training for free or buy private modules.

Need an estimate to build this app asap!