Hello!
The experimental probability is the data we get after performing an experiment. The theoretical probability is what we expect to happen. For example, we have a wheel labeled with a red section and a blue section. If you wanted to know how many times the spinner would land on the blue wheel, you can say 1/2, as it is the theoretical probability. If you spun the wheel 100 times, you would still get about 1/2 as well, which is the experimental probability.
As we can see, the soccer player has scored 1/5 goals. As it is soccer, there is no accurate theoretical probability as soccer is not like a fair wheel where there is an EXACT 1/2 chance. With soccer there is not an exact 1/2 chance of making a goal or not. This makes 1/5 our experimental probability.
To find this probability we will multiply our probability by 6.
0.2(6)=1.2
This means he has a 1.2/6 chance, which is a 20% or 1/5 chance, as we know he seems to have a 1/5 chance based off the data we have. We do not know the exact probability as he has only kicked 5 times.
I hope this helps!