If you want to add maxlength on the checkout street address field then you need to override on file in your theme

<vendername>/<theme_name>/Magento_Ui/web/templates/form/element/input.html

Make the above file & add the below code inside it

<!--
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
-->
<input class="input-text" type="text" data-bind="
value: value,
valueUpdate: 'keyup',
hasFocus: focused,
attr: {
name: inputName,
placeholder: placeholder,
'aria-describedby': getDescriptionId(),
'aria-required': required,
'aria-invalid': error() ? true : 'false',
id: uid,
disabled: disabled,
maxlength: inputName.slice(0,6) === 'street' ? 35 : 'none'
}" />

Note: We have tried this in Magento 2.3.7 version, If your version different then take copy this file from the vendor and add the last maxlength