There are many things to consider which is why I assume you are asking this question.
The common advice is to wait since we are generally living longer and will need the most we can get from Social Security, the longer you wait, the more you collect. Some of the SS income may be taxable based upon the other circumstances of your tax return.
It is also true that you may increase what you will eventually collect by continuing to work and you will potentially replace the lower earning years with what you make today.
Here is some information from the Social Security Administration:
https://www.ssa.gov/pubs/EN-05-10147.pdf
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