how can i add redirection using program

Hello @byron222,

Thank you for contacting the support.

Yes. You can use the Redirection\DB:add function to add the new redirections from the functions.php file:
Code:

\RankMath\Redirections\DB::add(
				[
					'url_to'      => $redirection['url_to'],
					'sources'     => $sources,
					'header_code' => $redirection['header_code'],
					'hits'        => $redirection['hits'],
					'created'     => $redirection['created'],
					'updated'     => $redirection['updated'],
				]
			);

Reference code:
https://github.com/rankmath/seo-by-rank-math/blob/master/includes/admin/class-import-export.php#L464-L485

This code is from the Import file which we use to import the Redirection rules from other plugins.

Hope that helps.