How do I update safari on my iPad

You don't.

Safari only gets updated with iOS upgrades/updates.

What year and model iPad do you have/own?

The “A” model number can be found on the aluminium back of your iPad, in small print, right under the larger bold print “iPad”.

What iOS/iPadOS version is this iPad, currently, running?

Please attempt to answer all questions asked.

Thank You.

Why don’t you just gives us info about your iPad?

What kind of issues are you having with your version of Safari?

We might be able to offer you some alternative advice/solution.