Add validation rules to my WP plugin using jQuery

I have a working Wordpress plugin. These plugin have 2 forms. I want to add validation rules for these forms. Pls see below or attached screenshot. Type "cat" so i know you are not sending automated message.

- Settings Form (Add description next to input field for each)
- Temperature: 0-1 (Default: 0.7) - Mandatory
- Max_Tokens: 1-4000 (Default: 300) - Mandatory
- Top_P: 0-1 (Default: 1) - Mandatory
- Frequency penalty: -2.0-2.0 (Default: 0.01) - Mandatory
- Presence penalty: -2.0-2.0 (Default: 0.01) -Mandatory
- Best of: 1-20 (Default: 1) - Mandatory
- Image Size: Dropdown. 3 options: 256x256, 512x512, 1024x1024. (Default: 512x512) - Mandatory

- Post Form
- Title: (3-255) - Mandatory
- Language: Dropdown. Default: English - Mandatory
- Number of Headings: Dropdown. Default: 5 - Mandatory (1-10)
- Add intro - Optional (Default: unchecked)
- Add Image - Optional (Default: unchecked)
- Add Conclusion - Optional (Default: unchecked)