If you want the full version and license for commercial use,
you can purchase here :

https://staircaselab.com/product/amsterdam-signature-font-duo/

File Font Version : 

1. Amsterdam Signature Font Duo.otf
2. Amsterdam Signature Font Duo.ttf
3. Amsterdam Signature Font Duo.woff
4. Amsterdam Signature Font Duo Italic.otf
5. Amsterdam Signature Font Duo Italic.ttf
6. Amsterdam Signature Font Duo Italic.woff
7. Amsterdam Signature Italic Script.otf
8. Amsterdam Signature Italic Script.ttf
9. Amsterdam Signature Italic Script.woff
10. Amsterdam Signature Script.otf
11. Amsterdam Signature Script.ttf
12. Amsterdam Signature Script.woff