Open Amazon and sign in to your account
Go to Your Orders
Find the order you want to remove from view
Select Archive order if available
Confirm the archive action
Repeat for each order you want hidden
Note that Amazon does not let you fully delete order history
To remove browsing history, go to Browsing History
Select Remove from view or Clear browsing history
To hide recommendations based on activity, manage your account activity settings
To delete digital purchase history, check the specific digital service settings if applicable