I need to create a professional color palette for my guideline working on InDesign, but i am not sure how or what are the steps!
If this is for web design I would suggest you look into Style Tiles:
If this is for print you could still create something similar to a style tile but more tailored to your preferences. I would also encourage learning how to save color palettes as
Ideally the best approach is to automate your workflow. If you offer or know that a client is going to want color callouts, fonts, etc. etc. then you should consider creating templates for this. Even if you're in web or print InDesign would be the best option since you could create a basic template to bring in and update it with what you're going to use in your project.
Since this question is very lacking also reference:
If you have images you need to pull color from bring it into Photoshop and use the color picker to pull colors and browse the many questions we have on where to build color palettes.
Per the comment below the answer using Adobe Kuler:
If you are on Kuler you need to sign into it to be able to save the color palette:
Check out Kuler by Adobe. https://color.adobe.com/
There are also already submitted palettes you can explore.