It be better if you have paste the code and not images but here you go:
Correct in index.php
<?php
get_header();
if ( have_posts() ) : ?>
<?php
while ( have_posts() ) : the_post(); ?>
<h2>....
Adding some context to above, the error telling that it found a character that doesn’t belong in that position. line 7
< h2.
This is why You add the closing php tag above. the_post(); ?>