How To Set Wapka 2020 web viewport and meta tag

I discover wapka 2020 user need this code it help in SEO crawling system and the view port make site can balance and better search optimize copy code below <meta name="viewport" content="width=device-width, initial-scale=1.0"/><meta name="author" content="Olajibson "> <meta name="copyright" content="2020"> <meta name="robots" content="index, follow"> <meta http-equiv="cache-control" content="cache"> <meta http-equiv="content-language" content="en">