You should first work out how much money you need to start the business and to keep it running for the first 3 to 6 months – not forgetting a salary for yourself!
Then you can consider the following sources of finance:
- Your own savings
- Borrowing from family and friends
- Borrowing from a bank
- Business angels
There are no sharia loans available in Denmark.
You can read more here: https://www.startupsvar.dk/financing-start-ups