I will take the first post:

Your theme has this CSS:

.traveltour-body h4 {
    color: #383838;
    font-size: 28px;
    font-family: "Poppins", sans-serif;
    margin-top: 0px;
    margin-bottom: 20px;
    line-height: 1.2;
    font-weight: 700;
}

To control this, you need custom CSS like this:

`.traveltour-body .searchandfilter[data-sf-form-id=”22″] h4 {
/* CSS rules */
}

To the second question:

I am not sure if that date will be a problem in that format. Maybe, maybe not. You would need to test. Ideally, it should be 20200918 for example. It should not matter that it is not datetime.

At the moment, you need to use both From and To. The To field can be hidden, and you can use JavaScript to fill it with a long away date when the page opens. We will change/enhance the form field date match/range options in V3, due in a few months.

In the template file for that page, you need to find where it calls the pagination. The chances are it is a call to an external function. You will need to edit the template file (using a child theme copy of the file for safety) and remove that pagination function and replace it.

For example, the WP-PageNavi plugin is a very popular pagination plugin, and if you have that installed, the code might be something like I show here:

https://support.searchandfilter.com/forums/topic/display-results-on-the-current-taxonomy-page/#post-257222

WP-PageNavi can also add page xx of xxx.

Similarly, to add the number of results code, assuming the results array is named $query:

Found <?php echo $query->found_posts; ?> Results

Editing your template files would be outside the scope of our support, so you would need the help of the theme author or a third party coder.