@Groucha and @wanzulfikri I would surprise if you can find real-time data about covid. Reports depend on country/county base everywhere in the world and are usually provided once per day. The data is also no comparable in many aspects so it should be taken cautiously. Data collection differs by country or even per hospitals. The most you can do is collect the data as it is and select what to show.
Worst, it can differ from one day to the other without warning (eg. a country doing more tests, or a re-evaluation of what to include as cases).
In general every new report would replace the old one, and the old data will be deleted. It is considered for public info only, so many reporting institutions are not providing APIs or something like that. Past data is gone or hard to find.
The websites that are specialised in showing covid data are keeping a database of every daily report and part of the data. You have to find a daily feed or a daily updated dataset. The one shared by @Groucha is ok. I found one specifically for the Netherlands and used for a codepen (https://codepen.io/ecccs/pen/pojJyOd). I might work on it a bit more later.
I actually suggest you to try to look some of the current websites and see if you can improve their views - they are usually AWFUL.
There is one person who deared to make a cluster out of some international values, just for fun. In general, finding creamy info right now is not easy and even impossible. In some cases important data might not be collected. In other cases some collected data might be considered more confidential or socially and even politically sensitive, so is not shared. I wouldnt doubt parts of collected data (when collected) might be also monopolised: at the end, info has an intrinsic value.
@Groucha: We worked for the same sector!!! I was the project coordinator though (the person that revised that everything was ok and followed the fieldwork). Big projects too, with a lot of data analysis and data handling (very hand-on and technical). Same here: almost 24/7 job. A lot of money involved. But that was long time ago now.