Hello @elnieno,
Thank you for participating in the 8th Week Crypto Course in its second season and for your efforts to complete the suggested tasks, you deserve an 8.5/10 rating, according to the following scale:

My review :

This Bollinger Bands setting is the best for traders. Where the use of 20-day moving average is followed by 2 standard deviations. The source is set close to use the closing price of the candle. The offset is 0 which indicates the number of candles in front of the chart.

It seems that you did not understand the question, you asked what are the best settings for the Bollinger Bands indicator.

• Bollinger bands settings differ from one stock to another, and changing the settings from one value to another gives you completely different results from each other, but you can change the values and see the result on the Bollinger bands so that the value that makes the Bollinger bands surround the chart and touch it completely as if it is support or resistance is the best setting you can get and watch the time when the distance becomes Between the Bollinger bands, it is as close as possible to know that it is followed by a big change (negative or positive, the important thing is that it is a big change).

In the remaining questions, your answer was accurate and methodologically clear. Also your analysis of the various aspects was convincing.

Thanks again for your effort, and we look forward to reading your next work.
Sincerely,@kouba01