Read the prerequisites displayed just before the installation actually starts.
--- Installation of Wampserver ---BEFORE proceeding with the installation of Wampserver, you must ensure that certain elements are installed on your system, otherwise Wampserver will absolutely not run, and in addition, the installation will be faulty and you need to remove Wampserver BEFORE installing the elements that were missing.
Make sure you are "up to date" in the redistributable packages VC9, VC10, VC11, VC13 , VC15 and VS16.... etc.
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Documentation Apache -
Documentation PHP -
Documentation MySQL -
Wampserver install files & addons