How to Hide a SharePoint List Column from a List Form
To begin, go to List Settings > Advanced Settings
Select Yes on Allow management of content types?
Click on one of the existing content types under the Content Type section
Next, click on the column you intend to hide, and choose the option Hidden.
Click OK.
Go to the New Item tab and select the Edit form. You will see that, on both the New Item and Edit forms, the field that you want to hide is not shown, and you're able to save the item without filling in a value for it.
To begin, go to List Settings > Advanced Settings
Select Yes on Allow management of content types?
Click on one of the existing content types under the Content Type section
Next, click on the column you intend to hide, and choose the option Hidden.
Click OK.
Go to the New Item tab and select the Edit form. You will see that, on both the New Item and Edit forms, the field that you want to hide is not shown, and you're able to save the item without filling in a value for it.