PHP API Linking to Wordpress Site

I wish to integrate and display a set of currency tables (buy/sell rates) on my website. I recently sign up as merchant in one app to display currency rates for the app users. The app company also pass me API documentation so that I can also display my rates into my website. This means we can use the API to grab our daily rates and publish into our website. They also given us the authentication details for beta environment testing. This is the current process on how we use the app as a merchant: 1. Publish & edit our daily rates via app's admin account 2. End users visit the app to check out and book our currency rate of the day. We need help in: 1. Create a responsive table in our wordpress website and display all 14 currency rates from beta environment. (you can use a similar looking table in our website, we use a plugin to create that table) 2. After Point 1 is completed, we will pass it to the app's management to take a look. When they verify we are displaying the currency rates correctly, then they will issue the actual live authetication userid & password details. 3. Replace the new authentication login. Take note that we need to create a new table of app's rates in our website and we keeping the old rates table that is already in our website (this is for our retail market & we manually insert update it in wordpress).