What should I call them? a Nameboard? a Board? a Plaque?
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In general, you could refer to such a sign as a "store sign" or perhaps a "retail sign". You might also call it a "marquee"; it is different from a typical marquee but close enough that you would be understood.
The round sign on the far left looks as though it projects from the facade; in that case, it might be called a "shingle".
I speak American English; other people may use different terms.