How to redirect to some component in Angular when the url has multiple variables concatenated with "&"?

no need to add these query parameters in the route path. you just need to have paypal. And in navigation just navigate by query parameters like this

Routes

const routes: Routes = [
  { path: 'home', component: HomeComponent},
  { path: 'paypal', component: HomeComponent}
];

Navigation

import { ActivatedRoute, Router } from '@angular/router';

export class AppComponent  {
  constructor(
     private router: Router,
     private activeRoute: ActivatedRoute
  ) { 
     this.router.navigate(['paypal'], { queryParams: {
       paymentId: 'PAYID-L7LA6CT5K826252R',
       token: 'EC-1R8557872G',
       PayerID: '8ANSA9QW'
     }});
  }

}

Also, you can get these query parameters from the activated route like this

import { ActivatedRoute, Router } from '@angular/router';

export class AppComponent  {

  constructor(
     private router: Router,
     private activeRoute: ActivatedRoute
  ) { 
   // get the params only one time
   console.log(activeRoute.snapshot.queryParams, 'paypal query params');

   // or you can subscribe the query param changes
   
   activeRoute.queryParams.subscribe(params => {
         console.log(params, 'paypal query params from the subscription');
   })
  }

  
}