Steps to fix this issue :- 

1.   Inject Wallet Balance and Company Address in PosOrder.js

​( Add this to the export_for_printing() method:)

if (this.partner_id){
    result.headerData.wallet_balance = this.partner_id.wallet_balance || 0.0;
}
if (this.pos.company){
    const company = this.pos.company;
    result.headerData.company_address = `${company.name || ''}, ${company.street || ''}, ${company.city || ''}, ${company.country_id?.name || ''}`;
}

( You might also need to ensure wallet_balance is loaded using:) 

​import { loadFields } from "@point_of_sale/app/utils/loader";

loadFields("res.partner", ["wallet_balance"]);

​2. ​Modify the Receipt Template (OrderReceipt.xml)

​( Add this inside the <xpath> block already extending the receipt)

​ ​<div style="font-weight:bold;">

​ ​    Company Address: <t t-esc="this.props.data.company_address"/>

​ ​</div>

​ ​ ​<div style="font-weight:bold;">

​ ​ ​    eWallet Balance: <t t-esc="this.props.data.wallet_balance"/>

​ ​ ​</div>

​3. Restart & Upgrade.

Thanks & Regards ,

Company :- DataInteger Consultancy Services LLP