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Step 1: Firstly installed the Workflow Rule module on Druapl 8 website.the Drupal 8 website. Apart from the workflow rule module we also need to install few more modules listed below to make that working with all mandatory functionality.
Content Moderation
Workflows Field
D8 Rules Essentials
Typed Data
Step 2: Check workflow states and state transitions from the D7 site and follow the step mentioned on this link https://www.drupal.org/docs/8/core/modules/workflows/overview to add the states and transition on Drupal 8 website.
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Step 3: Role permission for transition state,