That all depends on the Bible translation being used. Here are some answers
| Version | Number of times |
| King James Version | 30 |
| New International Version | 32 |
| New English Translation | 29 |
| English Standard Version | 38 |
| New Living Translation | 31 |
A good way to find this sort of information is on Bible Gateway. For example, here is the search for “thanksgiving” using the ESV. (Note that the Bible Gateway counts are incorrect because it includes subheadings which are not part of the Bible text.)