who change color of text in plotly scatter and diierent marker?

Here is how you can match the color of text to the marker color, by using for_each_trace:

import plotly.express as px
df = px.data.iris()
fig = px.scatter(df, x="sepal_width", y="sepal_length", color="species",  text='sepal_width')
fig.for_each_trace(lambda t: t.update(textfont_color=t.marker.color, textposition='top center'))
fig.show()

Regarding the legend, it already looks better IMO with my code above, but there is no option to turn this off. You could try an approach where you have two traces, one with just markers and one with just text and have the one with just text not appear in the legend, like so:

import plotly.express as px

df = px.data.iris()
fig = px.scatter(df, x="sepal_width", y="sepal_length", color="species", text='sepal_width')
def add_trace_copy(trace):
    fig.add_traces(trace)
    new_trace = fig.data[-1]
    new_trace.update(textfont_color=trace.marker.color, textposition='top center', 
                     mode="text", showlegend=False)
    trace.update(mode="markers")
fig.for_each_trace(add_trace_copy)
fig.show()

This works, but probably only using the output of Plotly Express functions, which set legendgroup automatically, and might be a bit brittle with more complex figures :)