Unlikely a legal free version exists.
While many Galaxy Store fonts are paid, you can find free modern options or use custom files: 33 Modern Fonts To Elevate Your Designs | Figma samsung imagination modern font free download
If you are specifically seeking a third-party font like "Imagination Modern," it is typically found on community-driven sites rather than official app stores: Font - Design - Samsung Developer Unlikely a legal free version exists
Samsung Imagination Modern Font is a sans-serif typeface designed by Samsung, a renowned technology company. The font is a part of Samsung's Imagination font family, which was introduced in 2019. The modern font is designed to be highly legible, making it suitable for use on digital devices, such as smartphones, tablets, and computers. such as smartphones