The 8 times table lists the multiples of 8: 8 × 1 = 8, 8 × 2 = 16, … 8 × 12 = 96. "8x" usually refers to this multiplication table.
"8x" can mean 8 times a variable, but most people searching it want the 8 times table: 8 × 1 = 8, 8 × 2 = 16, … 8 × 12 = 96.
Learn the multiples of 8 from 8 × 1 = 8 up to 8 × 12 = 96. Count up by 8 each time, or drill yourself with the table above.