Do strawberries have estrogen?

Not significant . 100 grams of strawberries have about 50 micrograms of phytoestrogens. This is not really enough to be significant.
No. Estrogen is derived from cholesterol, and plants do not make or contain cholesterol. Other cholesterol derived hormone families include androgens (testosterone), progesterones, glucocorticoids (cortisol), mineralocortcoids (aldosterone), and vitamin d compounds. They are found only in animal-derived foods, and some mushrooms/fungi.