Step 1: Sign into https://portal.office.com/
Step 2: Navigate to OneDrive.
Step 3: Find and select the item in your OneDrive.
Step 4: Click on the elipses icon on the top and select Version history.
Step 5: The next page will display all the available versions of that file that can be restored.
Step 6: Review the available versions and right-click on the version you want to restore and then click Restore.