Auto Fill on Number or Pages app.
My autofill just repeat and repeat the number. No continuous the number.. I'm so desperate abt this. :)
MacBook Air 13″, macOS 12.7
Question marked as
If you are attempting an automatic sequential cell numbering beginning with A2..A15, you need to ensure that the cell formatting for the range A2..A15 is number, enter A2 as 1; A3 as 2. Then select both A2 and A3. A yellow grip appears at the bottom of A3. Click and drag that downwards for a sequential number expansion.
Reading: Autofill cells in Numbers on Mac - Apple Support
The same approach works in a Numbers or Pages table.