Hello @ladybirdenterprises,
Thanks for confirming the login details. This one worked. 
Actually previous CSS code that I shared will increase the font size of labels. For ex https://www.screencast.com/t/caDqs5LN
Sorry that I misinterpreted the question. Please add following CSS to change the font size of text entered in text boxes which I believe that’s what you looking for:
.woocommerce-account form select, .woocommerce-account form textarea, .woocommerce-account form input[type="tel"], .woocommerce-account form input[type="text"], .woocommerce-account form input[type="email"], .woocommerce-account form input[type="password"], .woocommerce-checkout form select, .woocommerce-checkout form textarea, .woocommerce-checkout form input[type="tel"], .woocommerce-checkout form input[type="text"], .woocommerce-checkout form input[type="email"], .woocommerce-checkout form input[type="password"] {font-size: 20px;}
So the final output would look like https://www.screencast.com/t/WFYXwNCe
Let us know how it goes.
Thanks.