To create an editable grid view that does not require any kind of login, you would need to create a Grid View:
You can change the layout to any of the other options (list, gallery, kanban, chart, calendar and map) later as well, or choose different layouts for different tables or views!
These editable shared views will show all the records from the table by default. You can limit which records are shown by using specific filters in the Custom Views settings, or simply employing an existing Airtable view.