You have posted in the English forum, so please write in English. Alternatively use the Portuguese Forum.
As for your question, it depends on what symbol you are trading. Most symbols have no trading during the weekend, while some do.
If you trading symbols that don't trade during the weekend, then they will hold their place and resume on Sunday/Monday depending on your brokers time-zone.
If the symbols do trade during the week-end, then you will need to continue monitoring them.

- www.mql5.com
Good afternoon, I would like to know the information if I have unclosed orders on Friday, can I turn off the computer and reopen on Monday without losing the orders that are still open. Thanks.
you can always turn-off your computer at anytime.
Positions are keep on the Broker, and the positions will NEVER be modified when you turn off the computer, including weekends, etc..

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Good afternoon, I would like to know the information if I have unclosed orders on Friday, can I turn off the computer and reopen on Monday without losing the orders that are still open. Thanks.