Firstly you should calculate the parameters of Normal Distribution based on your data then you can have your distribution function.
By using these parameters you can calculate the probability. So, you should follow these steps:
1. Prepare your data in excel or anywhere. For Normal Distribution, you should remove the zero or less than zero data.
2. Copy the data from excel (or any file) and use it on:
https://agrimetsoft.com/distributions-calculator/Normal-Distribution-Fitting.aspx
3. Click on "d" button
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Then you have the parameters of Normal Distribution and you can use it on the calculator:
https://agrimetsoft.com/distributions-calculator/Normal-Distribution-Calculator.aspx
https://agrimetsoft.com/distributions-calculator