can someone explain me correctly what does this information mean?
Can you explain what each line means?
Est. Shares 76,508,243 (done: 27.47%)
Your Valid 164.0933
Your Invalid 0.0000 (0.00%)
highest percentage and highest valid, Is it good or not?
yesterday the percentage stayed at 600% for 4 hours, for 4 hours I did not get any zcash, it's normal?
Est. Shares is an estimate of how many shares of work need to be done before a block is hit by the pool. The Done: percentage is how many shares have been completed by the pool in percentage. So in your example the pool has completed 21,016,814 shares saying that about 55 million shares are needed before a block is hit ... based on the average number of shares it has taken to complete previous blocks.
Your Valid is the number of shares you've submitted towards the pool shares. The 'done' percentage will climb until a block is hit. It can climb to 100% and beyond depending on 'luck'. Go to the 'blocks' page to see all previous blocks and how many shares it took to complete them, then you'll see a number to the far right which is the percentage of shares it took to hit that block. If they are red the 'luck' is bad if it is green the 'luck' is good. Since the pool pays PPLNS you only get paid when a block is hit rather than per share (which is PPS, pay per share).
Does that make sense?
-NeoenY152