The sentence you wrote is: 'Bees collect nectar, turn it into honey and keep it safe in the beehive.'
This sentence is almost perfect! Just a small improvement is to add a comma before 'and' because you are connecting three actions: collect nectar, turn it into honey, and keep it safe.
So, it should be:
Bees collect nectar, turn it into honey, and keep it safe in the beehive.
Adding the comma makes the sentence clearer and easier to read.