Hii,
if you can hide for perticular user that 
Option 1: Remove “Budget” Access via User Settings

Go to Settings → Users & Companies → Users.

Open the user who should not see the Budget button.

In the Access Rights tab:

• Find the Accounting section.
• Make sure Budgets is unchecked (or that the user is not in the group: Accounting / Budget Manager).

Save.

and if you can hide for all then 
Create a custom module structure
In your custom module, create this file:

my_module/static/src/js/hide_budget_button.js

/** @odoo-module **/

import { FinancialReport } from '@account_reports/components/financial_report/financial_report';

import { patch } from "@web/core/utils/patch";

patch(FinancialReport.prototype, {

    setup() {

        super.setup();

        // Filter out the Budget button

        if (this.reportButtons) {

            this.reportButtons = this.reportButtons.filter(

                (button) => button.name !== 'budget'

            );

        }

    },

});

and after that update manifest file 

'assets': {

    'web.assets_backend': [

        'my_module/static/src/js/hide_budget_button.js',

    ],

},

option 2:

If you don’t use budgets at all, you can uninstall the module:

1. Go to Apps.
2. Search for Budget Management (account_budget).
3. Click the dropdown next to “Installed” → Uninstall.

i hope it is use full