Presumably you refer to the iPad's Scribble feature...
Apple Pencil/Scribble support is detailed here:
iOS and iPadOS - Feature Availability - Apple
As you’ll note, while Scribble doesn't support Swedish, the following languages are currently supported:
- Arabic
- Cantonese (Traditional)
- Chinese (Simplified)
- Chinese (Traditional)
- English (Australia)
- English (Canada)
- English (India)
- English (Ireland)
- English (New Zealand)
- English (Singapore)
- English (South Africa)
- English (United Kingdom)
- English (United States)
- French (Belgium)
- French (Canada)
- French (France)
- French (Switzerland)
- German (Austria)
- German (Germany)
- German (Switzerland)
- Italian (Italy)
- Italian (Switzerland)
- Japanese
- Korean
- Portuguese (Brazil)
- Portuguese (Portugal)
- Russian
- Spanish (Latin America)
- Spanish (Mexico)
- Spanish (Spain)
- Thai (Thailand)
- Ukrainian
- Vietnamese
Contributors here are all end-users, just like you. Other than information published by Apple, nobody here has any insight into Apple’s product design decisions or future software development roadmap.
Apple invites submission of feature requests via its Product Feedback portal. For iPad and iPadOS:
Feedback - iPad - Apple
If you would like to see support for additional languages, such as Swedish, this would be the most appropriate channel through which to make your request.